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{{use mdy dates|date=July 2023}}
'''Do Not Track''' ('''DNT''') is a formerly official [[List of HTTP header fields|HTTP header field]], designed to allow internet users to opt out of [[Web tracking|tracking by websites]]—which includes the collection of data regarding a user's activity across multiple distinct contexts, and the retention, use, or sharing of data derived from that activity outside the context in which it occurred.<ref name="Corbin-2010" />
The Do Not Track header was originally proposed in 2009 by researchers Christopher Soghoian and Sid Stamm.<ref name="Fleishman-2024">{{Cite news |last=Fleishman |first=Glenn |date=2019-03-07 |title=How the tragic death of Do Not Track ruined the web for everyone |url=https://www.fastcompany.com/90308068/how-the-tragic-death-of-do-not-track-ruined-the-web-for-everyone |work=[[Fast Company]]}}</ref> Mozilla Firefox became the first browser to implement the feature. The header didn't find widespread success due to the lack of legislation that would require companies to legally respect the Do Not Track header and most companies and websites not respecting the header when sent by the user.<ref>{{Cite web |last=Goodrich |first=Ben |date=1 May 2012 |title=An Analysis of the 'Do Not Track' Header |url=https://www.cs.tufts.edu/comp/116/archive/bgoodrich.pdf}}</ref>
In 2020,c a coalition of US-based internet companies announced the '''Global Privacy Control''' header that spiritually succeeds Do Not Track header. The creators hope that this new header will meet the definition of "user-enabled global privacy controls" defined by the California Consumer Privacy Act (CCPA) and the European General Data Protection Regulation (GDPR). In this case, the new header would be automatically strengthened by existing laws and companies would be required to honor it.
== Operation ==
The DNT header accepts three values: <code>1</code> in case the user does not want to be tracked ''(opt-out)'', <code>0</code> in case the user consents to be tracked ''(opt-in)'', or ''null'' (no header sent) if the user has not expressed a preference. The default behavior required by the standard is not to send the header unless the user enables the setting via their browser or their choice is implied by the use of that specific browser.<ref name="DNT">{{Cite web |title=DNT - HTTP|url=https://devdoc.net/web/developer.mozilla.org/en-US/docs/Web/Security/Do_not_track_field_guide.html|access-date=2024-10-13}}</ref>
== History ==
In 2007, several consumer advocacy groups asked the U.S. [[Federal Trade Commission]] (FTC) to create a Do Not Track list for online advertising. The proposal would have required that online advertisers submit their information to the FTC, which would compile a machine-readable list of the [[Domain name|domain names]] used by those companies to place cookies or otherwise track consumers.<ref>{{cite web|url=https://www.cdt.org/privacy/20071031consumerprotectionsbehavioral.pdf|title=The History of the Do Not Track Header|work=Center for Democracy and Technology|date=2007-10-31|access-date=22 February 2012}}</ref>
In July 2009, researchers Christopher Soghoian and Sid Stamm implemented support for the Do Not Track header in the Firefox web browser via a prototype add-on. Stamm was, at the time, a privacy engineer at Mozilla, while Soghoian soon afterward started working at the FTC.<ref>{{cite news | url=https://www.wired.com/threatlevel/2009/08/soghoian-joins-ftc/ | title=Outspoken Privacy Advocate Joins FTC | work=Wired News | first=Kim| last=Zetter| date=2009-08-17 | access-date=2009-11-20}}</ref> One year later, during a U.S. Senate privacy hearing, FTC Chairman Jon Leibowitz told the Senate Commerce Committee that the commission was exploring the idea of proposing a "do-not-track" list.<ref name="Corbin-2010">{{cite news | url=http://www.internetnews.com/ec-news/article.php/3895496/FTC+Mulls+BrowserBased+Block+for+Online+Ads.htm | title=FTC Mulls Browser-Based Block for Online Ads | work=Internet News | first=Kenneth| last=Corbin| date=2010-07-28 | access-date=2009-11-20}}</ref>
In December 2010, the FTC issued a privacy report that called for a "do-not-track" system that would enable people to avoid having their actions being monitored online.<ref>{{cite news|url=https://www.wsj.com/articles/SB10001424052748704594804575648670826747094|title=FTC Backs Do-Not-Track System for Web|last=Angwin|first=Julia|work= Wall Street Journal|date=2010-12-02|access-date=22 February 2012}}</ref>
One week later, Microsoft announced that its next browser would include support for Tracking Protection Lists that block tracking of consumers using blacklists supplied by third parties.<ref>{{cite news|url=https://www.wsj.com/articles/SB10001424052748703296604576005542201534546|title=Microsoft to Add 'Tracking Protection' to Web Browser|last=Angwin|first=Julia|work= Wall Street Journal|date=2010-12-07|access-date=22 February 2012}}</ref> In January 2011, Mozilla announced that its Firefox browser would soon provide a Do Not Track solution, via a browser header.<ref name="online">{{cite news |author=Julia Angwin |author-link=Julia Angwin |date=2011-01-21 |title=Web Tool On Firefox To Deter Tracking |url=https://www.wsj.com/articles/SB10001424052748704213404576100441609997236 |access-date=2012-02-22 |work=Wall Street Journal}}</ref> Microsoft's [[Internet Explorer 9]],<ref>{{cite news|url=https://www.wsj.com/articles/SB10001424052748703363904576200981919667762|title=Microsoft Adds Do-Not-Track Tool to Browser|last=Angwin|first=Julia|work= Wall Street Journal|date=2011-03-15|access-date=22 February 2012}}</ref> Apple's Safari,<ref name="Nick Wingfield">{{Cite journal|author=Nick Wingfield|date=2011-04-14|title=Apple Adds Do-Not-Track Tool to New Browser|url=https://www.wsj.com/articles/SB10001424052748703551304576261272308358858|journal=Wall Street Journal|access-date=2011-04-14}}</ref> Opera<ref name="Opera">{{Cite web|author=Opera Desktop Team |date=2012-02-11|title=Core update with Do Not Track, and mail and theme fixes |url=http://my.opera.com/desktopteam/blog/2012/02/10/core-dnt-mail-themes |archive-url= https://web.archive.org/web/20130310122003/http://my.opera.com/desktopteam/blog/2012/02/10/core-dnt-mail-themes |archive-date=2013-03-10 |url-status=dead |access-date=2012-02-10|work=Opera blog}}</ref> and Google Chrome<ref name="longerbattery">{{Cite web| title=Longer battery life and easier website permissions |url= https://chrome.googleblog.com/2012/11/longer-battery-life-and-easier-website.html |work=Chrome blog |access-date=2012-11-07 |date=2012-11-06}}</ref> all later added support for the header approach.
In August 2015 a coalition of privacy groups led by the Electronic Frontier Foundation using [[World Wide Web Consortium|W3C]]'s Tracking Preference Expression (DNT) standard proposed that "Do not track" be the goal for advocates to demand of businesses.<ref>{{cite web |url= http://www.consumeraffairs.com/news/privacy-groups-offer-do-not-track-compromise-will-online-advertisers-and-publishers-accept-it-080615.html |title=Privacy groups offer "Do Not Track" compromise; will online advertisers and publishers accept it? |first=Jennifer |last=Abel |work=[[ConsumerAffairs]] |date=6 Aug 2015 |access-date=10 Aug 2015}}</ref>
In January 2019, the W3C Tracking Protection Working Group was disbanded, citing "insufficient deployment of these extensions" and lack of "indications of planned support among user agents, third parties, and the ecosystem at large".<ref name="GitHub note W3C DNT disbanded">{{Cite web|url=https://github.com/w3c/dnt/commit/5d85d6c3d116b5eb29fddc69352a77d87dfd2310|title=WG closed · w3c/dnt@5d85d6c|website=GitHub|language=en|access-date=2019-02-07}}</ref><ref name="Gizmodo Apple Removing Do Not Track">{{Cite web|url=https://gizmodo.com/apple-is-removing-do-not-track-from-safari-1832400768|title=Apple Is Removing 'Do Not Track' From Safari|last=Hill|first=Kashmir|website=Gizmodo|date=2019-02-06 |language=en-US|access-date=2019-02-07}}</ref> Beginning the following month, Apple removed DNT support from Safari, citing that it could be used as a "[[browser fingerprinting|fingerprinting]] variable" for tracking.<ref name="apple fingerprinting">{{Cite web|url=https://www.macworld.com/article/3338152/apple-safari-removing-do-not-track.html|title=Apple is removing the Do Not Track toggle from Safari, but for a good reason|date=2019-02-07|website=Macworld|language=en|access-date=2019-10-24}}</ref>
=== Internet Explorer 10 default setting controversy ===
When using the "Express" settings upon installation, a Do Not Track option is enabled by default for [[Internet Explorer 10]] and [[Windows 8]].<ref>{{cite news |url= https://www.pcmag.com/article2/0,2817,2412077,00.asp |title=Internet Explorer 10 Released for Windows 7 |access-date=22 Dec 2012 |date=13 Nov 2012 |work=PC Magazine}}</ref> Microsoft faced criticism for its decision to enable Do Not Track by default<ref>{{cite web|url=http://blogs.technet.com/b/microsoft_on_the_issues/archive/2012/08/07/do-not-track-in-the-windows-8-set-up-experience.aspx|archive-url=https://web.archive.org/web/20120808130947/http://blogs.technet.com/b/microsoft_on_the_issues/archive/2012/08/07/do-not-track-in-the-windows-8-set-up-experience.aspx|url-status=dead|archive-date=2012-08-08|title=Do Not Track in the Windows 8 Setup Experience|author=Brendon Lynch |date=2012-08-07|work=Microsoft on the issues blog}}</ref> from advertising companies, who say that use of the Do Not Track header should be a choice made by the user and must not be automatically enabled. The companies also said that this decision would violate the [[Digital Advertising Alliance]]'s agreement with the U.S. government to honor a Do Not Track system, because the coalition said it would only honor such a system if it were not enabled by default by web browsers.<ref>{{cite web|title=Microsoft ticks off advertisers with IE10 'Do Not Track' policy|url=http://news.cnet.com/8301-10805_3-57445568-75/microsoft-ticks-off-advertisers-with-ie10-do-not-track-policy/|date=1 Jun 2012 |website=CNET|access-date=8 Sep 2012}}</ref> A Microsoft spokesperson defended its decision however, stating that users would prefer a web browser that automatically respected their privacy.<ref name=dig-msdnt>{{cite news|title=Microsoft's "Do Not Track" Move Angers Advertising Industry |url=https://blogs.wsj.com/digits/2012/05/31/microsofts-do-not-track-move-angers-advertising-industry/|work=Digits|publisher=The Wall Street Journal|access-date=8 Sep 2012}}</ref>
On September 7, 2012, [[Roy Fielding]], an author of the Do Not Track standard, [[Commit (version control)|committed]] a patch to the source code of the [[Apache HTTP Server]], which would make the server explicitly ignore any use of the Do Not Track header by users of Internet Explorer 10. Fielding wrote that Microsoft's decision "deliberately violates" the Do Not Track specification because it "does not protect anyone's privacy unless the recipients believe it was set by a real human being, with a real preference for privacy over personalization". The Do Not Track specification did not explicitly mandate that the use of Do Not Track actually be a choice until after the feature was implemented in Internet Explorer 10.<ref>{{cite web |url=https://arstechnica.com/information-technology/2012/08/microsoft-sticks-to-its-guns-keeps-do-not-track-on-by-default-in-ie10/ |title=Microsoft sticks to its guns, keeps Do Not Track on by default in IE10 |website=Ars Technica |date=8 Aug 2012 |access-date=14 May 2013}}</ref> According to Fielding, Microsoft knew its Do Not Track signals would be ignored, and that its goal was to effectively give an illusion of privacy while still catering to their own interests.<ref name=cnet-apachednt>{{cite web |first=Stephen |last=Shankland |title=Apache Web software overrides IE10 do-not-track setting |url=https://www.cnet.com/tech/services-and-software/apache-web-software-overrides-ie10-do-not-track-setting/ |website=CNET |date=7 September 2012|access-date=13 April 2024}}</ref> On October 9, 2012, Fielding's patch was [[comment (computer programming)|commented out]], restoring the previous behavior.<ref>{{cite web|title= Apache Won't Override Do-Not-Track Headers |url= http://www.mediapost.com/publications/article/184855/apache-wont-override-do-not-track-headers.html |date=9 Oct 2012 |publisher= MediaPost Communications |access-date=22 Dec 2012}}</ref><ref>{{Cite web|title=Keep this in, but commented out: also provide a little · apache/httpd@3dd6fb6|url=https://github.com/apache/httpd/commit/3dd6fb6882ae2b453c90d51e777e88bc420a0cb1|website = GitHub|access-date = 4 Jul 2017}}</ref>
On April 3, 2015, Microsoft announced that starting with [[Windows 10]], it would comply with the specification and no longer automatically enable Do Not Track as part of the operating system's "Express" default settings, but that the company will "provide customers with clear information on how to turn this feature on in the browser settings should they wish to do so".<ref name=cw-dntdisabledms>{{cite web|title=Microsoft rolls back commitment to Do Not Track |url=http://www.computerworld.com/article/2905551/microsoft-rolls-back-commitment-to-do-not-track.html|website=Computerworld|date=3 Apr 2015 |publisher=IDG |access-date=3 Apr 2015}}</ref>
== Adoption ==
Very few advertising companies actually supported DNT, due to a lack of regulatory or voluntary requirements for its use,<ref name=bi-gapingflaw>{{cite web|title=Here's The Gaping Flaw in Microsoft's 'Do Not Track' System For IE10|url=http://www.businessinsider.com/heres-the-gaping-flaw-in-microsofts-do-not-track-system-for-ie10-2012-8|website=Business Insider|access-date=8 Sep 2012}}</ref> and unclear standards over how websites should respond to the header. Websites that honor DNT requests include [[Medium (website)|Medium]] and [[Pinterest]].<ref>{{cite web |last1=Bacchus |first1=Arif |title=Millions of People Use 'Do Not Track' Tool Which Does Nothing |url=https://www.digitaltrends.com/computing/do-not-tracking-tools-do-nothing/ |website=Digital Trends |date=15 Oct 2018 |publisher=Designtechnica Corporation |access-date=1 Nov 2019}}</ref> Despite offering the option in its Chrome web browser, [[Google]] did not implement support for DNT on its websites, and directed users to its online privacy settings and opt-outs for interest-based advertising instead.<ref name="gizmodo-doesntdoanything"/> The [[Digital Advertising Alliance]], [[Council of Better Business Bureaus]] and the [[Data & Marketing Association]] does not require its members to honor DNT signals.<ref name="DAA-position">{{cite web|title=Digital Advertising Alliance Gives Guidance to Marketers for Microsoft IE10 'DO NOT TRACK' Default Setting|url=http://www.aboutads.info/blog/digital-advertising-alliance-gives-guidance-marketers-microsoft-ie10-%E2%80%98do-not-track%E2%80%99-default-set|access-date=10 Oct 2012}}</ref>
Use of [[ad blocking]] software to block web trackers and advertising has become increasingly common (with users citing both privacy concerns and performance impact as justification), while Apple and Mozilla began to add privacy enhancements (such as "tracking protection") to their browsers, that are designed to reduce undue cross-site tracking. In addition, laws such as the European Union's [[General Data Protection Regulation]] (GDPR) have imposed restrictions on how companies are to store and process personal information.<ref name="gizmodo-doesntdoanything">{{Cite web|url=https://gizmodo.com/do-not-track-the-privacy-tool-used-by-millions-of-peop-1828868324|title='Do Not Track' Privacy Tool Doesn't Do Anything|website=Gizmodo|date=2018-10-15 |access-date=2019-10-24}}</ref><ref name="Fleishman-2024" />
[[Princeton University]] associate professor of computer science [[Jonathan Mayer]], who was a member of the W3C's working group for DNT, argued that the concept is a "failed experiment".<ref name="gizmodo-doesntdoanything"/>
== Global Privacy Control ==
'''Global Privacy Control''' (GPC) is a proposed [[List of HTTP header fields|HTTP header field]] and [[Document Object Model|DOM property]] that can be used to inform websites of the user's wish to have their information not be sold or used by ad trackers.<ref>{{Cite web |title=Global Privacy Control (GPC) |url=https://privacycg.github.io/gpc-spec/ |access-date=2024-08-17 |website=privacycg.github.io}}</ref> GPC was developed in 2020 by privacy technology researchers such as [[Wesleyan University]] professor [[Sebastian Zimmeck]] and former Chief Technologist of the [[Federal Trade Commission]] [[Ashkan Soltani]], as well as a group of privacy-focused companies including the [[Electronic Frontier Foundation]], [[Automattic]] (owner of [[Tumblr]] and [[WordPress]]), and more.<ref>{{Cite web |title=Frequently Asked Questions {{!}} Global Privacy Control |url=https://globalprivacycontrol.org/faq |access-date=2024-08-17 |website=globalprivacycontrol.org |language=en |quote="Who is supporting the development of GPC?"}}</ref>
The signal has been implemented by [[DuckDuckGo]]'s [[DuckDuckGo Private Browser|private browser]] and extension, ''[[The New York Times]]'', and privacy browser [[Brave (web browser)|Brave]] and is supported by [[Firefox]] creator, [[Mozilla]]<ref>{{Cite web |title=Founding Organizations {{!}} Global Privacy Control |url=https://globalprivacycontrol.org/orgs |access-date=2024-08-17 |website=globalprivacycontrol.org |language=en}}</ref> as well as the [[Attorney General of California|California Attorney General]].<ref name="State-of-California-Department-of-Justice-Office-of-the-Attorney-General-2018">{{Cite web |date=2018-10-15 |title=California Consumer Privacy Act (CCPA) |url=https://oag.ca.gov/privacy/ccpa |access-date=2024-08-17 |website=State of California - Department of Justice - Office of the Attorney General |language=en}}</ref> Notably, [[Google Chrome]] has not yet implemented the signal,<ref>{{Cite web |title=Chrome Privacy Now! |url=https://chromeprivacy.org/ |access-date=2024-08-17 |website=Chrome Privacy Now! |language=en-US}}</ref> despite still allowing users to enable the now depreciated Do Not Track header.<ref>{{Cite web |title=Turn "Do Not Track" on or off |url=https://support.google.com/chrome/answer/2790761 |website=Google Chrome Help |publisher=Google Inc.}}</ref> However, there are third-party extensions available for Chrome if users want to send the GPC header with their requests, including the [[Privacy Badger]] extension by [[Electronic Frontier Foundation|The Electronic Frontier Foundation]],<ref>{{Cite web |title=Privacy Badger |url=https://privacybadger.org/#What-is-Global-Privacy-Control |access-date=2024-08-17 |website=Electronic Frontier Foundation |language=en |quote="What is Global Privacy Control (GPC)?"}}</ref> the [[DuckDuckGo]] Privacy Essentials add-on,<ref>{{Cite web |date=2021-01-28 |title=Global Privacy Control (GPC) Enabled by Default in DuckDuckGo Apps & Extensions |url=https://spreadprivacy.com/global-privacy-control-enabled-by-default/ |access-date=2024-08-17 |website=Spread Privacy |language=en}}</ref> and more.
One key difference between the Do Not Track header and GPC is that GPC is a valid do-not-sell-my-personal-information signal according to the [[California Consumer Privacy Act]] (CCPA), which stipulates that websites are legally required to respect a signal sent by users who want to opt-out of having their personal data sold.<ref name="State-of-California-Department-of-Justice-Office-of-the-Attorney-General-2018" /> In July 2021, the [[Attorney General of California|California Attorney General]] clarified through an FAQ that under law, the Global Privacy Control signal must be honored.<ref name="State-of-California-Department-of-Justice-Office-of-the-Attorney-General-2018" />
On August 24, 2022, the [[Attorney General of California|California Attorney General]] announced [[Sephora]] paid a $1.2-million settlement for allegedly failing to process opt-out requests via a user-enabled global privacy control signal.<ref>{{Cite news |last=Merken |first=Sara |date=2022-08-24 |title=Sephora to pay $1.2 mln in privacy settlement with Calif. AG over data sales |url=https://www.reuters.com/legal/litigation/sephora-pay-12-mln-privacy-settlement-with-calif-ag-over-data-sales-2022-08-24/ |url-status=live |archive-url=https://web.archive.org/web/20230510060201/https://www.reuters.com/legal/litigation/sephora-pay-12-mln-privacy-settlement-with-calif-ag-over-data-sales-2022-08-24/ |archive-date=2023-05-10 |access-date=2024-06-13 |work=[[Reuters]]}}</ref>
== See also ==
* [[Blur (browser extension)]]
* [[P3P]]
* [[Evil bit]]
* {{Slink|List of HTTP header fields|Common non-standard request headers}}
* {{Slink|HTTP cookie|Privacy|Third-party cookie}}
* [[Better Business Bureau]]
* [[Data & Marketing Association]]
== References ==
{{reflist|30em}}
[[Category:Hypertext Transfer Protocol headers]]
[[Category:Internet privacy]]' |
New page wikitext, after the edit (new_wikitext) | '
== Operation ==
The DNT header accepts three values: <code>1</code> in case the user does not want to be tracked ''(opt-out)'', <code>0</code> in case the user consents to be tracked ''(opt-in)'', or ''null'' (no header sent) if the user has not expressed a preference. The default behavior required by the standard is not to send the header unless the user enables the setting via their browser or their choice is implied by the use of that specific browser.<ref name="DNT">{{Cite web |title=DNT - HTTP|url=https://devdoc.net/web/developer.mozilla.org/en-US/docs/Web/Security/Do_not_track_field_guide.html|access-date=2024-10-13}}</ref>
== History ==
In 2007, several consumer advocacy groups asked the U.S. [[Federal Trade Commission]] (FTC) to create a Do Not Track list for online advertising. The proposal would have required that online advertisers submit their information to the FTC, which would compile a machine-readable list of the [[Domain name|domain names]] used by those companies to place cookies or otherwise track consumers.<ref>{{cite web|url=https://www.cdt.org/privacy/20071031consumerprotectionsbehavioral.pdf|title=The History of the Do Not Track Header|work=Center for Democracy and Technology|date=2007-10-31|access-date=22 February 2012}}</ref>
In July 2009, researchers Christopher Soghoian and Sid Stamm implemented support for the Do Not Track header in the Firefox web browser via a prototype add-on. Stamm was, at the time, a privacy engineer at Mozilla, while Soghoian soon afterward started working at the FTC.<ref>{{cite news | url=https://www.wired.com/threatlevel/2009/08/soghoian-joins-ftc/ | title=Outspoken Privacy Advocate Joins FTC | work=Wired News | first=Kim| last=Zetter| date=2009-08-17 | access-date=2009-11-20}}</ref> One year later, during a U.S. Senate privacy hearing, FTC Chairman Jon Leibowitz told the Senate Commerce Committee that the commission was exploring the idea of proposing a "do-not-track" list.<ref name="Corbin-2010">{{cite news | url=http://www.internetnews.com/ec-news/article.php/3895496/FTC+Mulls+BrowserBased+Block+for+Online+Ads.htm | title=FTC Mulls Browser-Based Block for Online Ads | work=Internet News | first=Kenneth| last=Corbin| date=2010-07-28 | access-date=2009-11-20}}</ref>
In December 2010, the FTC issued a privacy report that called for a "do-not-track" system that would enable people to avoid having their actions being monitored online.<ref>{{cite news|url=https://www.wsj.com/articles/SB10001424052748704594804575648670826747094|title=FTC Backs Do-Not-Track System for Web|last=Angwin|first=Julia|work= Wall Street Journal|date=2010-12-02|access-date=22 February 2012}}</ref>
One week later, Microsoft announced that its next browser would include support for Tracking Protection Lists that block tracking of consumers using blacklists supplied by third parties.<ref>{{cite news|url=https://www.wsj.com/articles/SB10001424052748703296604576005542201534546|title=Microsoft to Add 'Tracking Protection' to Web Browser|last=Angwin|first=Julia|work= Wall Street Journal|date=2010-12-07|access-date=22 February 2012}}</ref> In January 2011, Mozilla announced that its Firefox browser would soon provide a Do Not Track solution, via a browser header.<ref name="online">{{cite news |author=Julia Angwin |author-link=Julia Angwin |date=2011-01-21 |title=Web Tool On Firefox To Deter Tracking |url=https://www.wsj.com/articles/SB10001424052748704213404576100441609997236 |access-date=2012-02-22 |work=Wall Street Journal}}</ref> Microsoft's [[Internet Explorer 9]],<ref>{{cite news|url=https://www.wsj.com/articles/SB10001424052748703363904576200981919667762|title=Microsoft Adds Do-Not-Track Tool to Browser|last=Angwin|first=Julia|work= Wall Street Journal|date=2011-03-15|access-date=22 February 2012}}</ref> Apple's Safari,<ref name="Nick Wingfield">{{Cite journal|author=Nick Wingfield|date=2011-04-14|title=Apple Adds Do-Not-Track Tool to New Browser|url=https://www.wsj.com/articles/SB10001424052748703551304576261272308358858|journal=Wall Street Journal|access-date=2011-04-14}}</ref> Opera<ref name="Opera">{{Cite web|author=Opera Desktop Team |date=2012-02-11|title=Core update with Do Not Track, and mail and theme fixes |url=http://my.opera.com/desktopteam/blog/2012/02/10/core-dnt-mail-themes |archive-url= https://web.archive.org/web/20130310122003/http://my.opera.com/desktopteam/blog/2012/02/10/core-dnt-mail-themes |archive-date=2013-03-10 |url-status=dead |access-date=2012-02-10|work=Opera blog}}</ref> and Google Chrome<ref name="longerbattery">{{Cite web| title=Longer battery life and easier website permissions |url= https://chrome.googleblog.com/2012/11/longer-battery-life-and-easier-website.html |work=Chrome blog |access-date=2012-11-07 |date=2012-11-06}}</ref> all later added support for the header approach.
In August 2015 a coalition of privacy groups led by the Electronic Frontier Foundation using [[World Wide Web Consortium|W3C]]'s Tracking Preference Expression (DNT) standard proposed that "Do not track" be the goal for advocates to demand of businesses.<ref>{{cite web |url= http://www.consumeraffairs.com/news/privacy-groups-offer-do-not-track-compromise-will-online-advertisers-and-publishers-accept-it-080615.html |title=Privacy groups offer "Do Not Track" compromise; will online advertisers and publishers accept it? |first=Jennifer |last=Abel |work=[[ConsumerAffairs]] |date=6 Aug 2015 |access-date=10 Aug 2015}}</ref>
In January 2019, the W3C Tracking Protection Working Group was disbanded, citing "insufficient deployment of these extensions" and lack of "indications of planned support among user agents, third parties, and the ecosystem at large".<ref name="GitHub note W3C DNT disbanded">{{Cite web|url=https://github.com/w3c/dnt/commit/5d85d6c3d116b5eb29fddc69352a77d87dfd2310|title=WG closed · w3c/dnt@5d85d6c|website=GitHub|language=en|access-date=2019-02-07}}</ref><ref name="Gizmodo Apple Removing Do Not Track">{{Cite web|url=https://gizmodo.com/apple-is-removing-do-not-track-from-safari-1832400768|title=Apple Is Removing 'Do Not Track' From Safari|last=Hill|first=Kashmir|website=Gizmodo|date=2019-02-06 |language=en-US|access-date=2019-02-07}}</ref> Beginning the following month, Apple removed DNT support from Safari, citing that it could be used as a "[[browser fingerprinting|fingerprinting]] variable" for tracking.<ref name="apple fingerprinting">{{Cite web|url=https://www.macworld.com/article/3338152/apple-safari-removing-do-not-track.html|title=Apple is removing the Do Not Track toggle from Safari, but for a good reason|date=2019-02-07|website=Macworld|language=en|access-date=2019-10-24}}</ref>
=== Internet Explorer 10 default setting controversy ===
When using the "Express" settings upon installation, a Do Not Track option is enabled by default for [[Internet Explorer 10]] and [[Windows 8]].<ref>{{cite news |url= https://www.pcmag.com/article2/0,2817,2412077,00.asp |title=Internet Explorer 10 Released for Windows 7 |access-date=22 Dec 2012 |date=13 Nov 2012 |work=PC Magazine}}</ref> Microsoft faced criticism for its decision to enable Do Not Track by default<ref>{{cite web|url=http://blogs.technet.com/b/microsoft_on_the_issues/archive/2012/08/07/do-not-track-in-the-windows-8-set-up-experience.aspx|archive-url=https://web.archive.org/web/20120808130947/http://blogs.technet.com/b/microsoft_on_the_issues/archive/2012/08/07/do-not-track-in-the-windows-8-set-up-experience.aspx|url-status=dead|archive-date=2012-08-08|title=Do Not Track in the Windows 8 Setup Experience|author=Brendon Lynch |date=2012-08-07|work=Microsoft on the issues blog}}</ref> from advertising companies, who say that use of the Do Not Track header should be a choice made by the user and must not be automatically enabled. The companies also said that this decision would violate the [[Digital Advertising Alliance]]'s agreement with the U.S. government to honor a Do Not Track system, because the coalition said it would only honor such a system if it were not enabled by default by web browsers.<ref>{{cite web|title=Microsoft ticks off advertisers with IE10 'Do Not Track' policy|url=http://news.cnet.com/8301-10805_3-57445568-75/microsoft-ticks-off-advertisers-with-ie10-do-not-track-policy/|date=1 Jun 2012 |website=CNET|access-date=8 Sep 2012}}</ref> A Microsoft spokesperson defended its decision however, stating that users would prefer a web browser that automatically respected their privacy.<ref name=dig-msdnt>{{cite news|title=Microsoft's "Do Not Track" Move Angers Advertising Industry |url=https://blogs.wsj.com/digits/2012/05/31/microsofts-do-not-track-move-angers-advertising-industry/|work=Digits|publisher=The Wall Street Journal|access-date=8 Sep 2012}}</ref>
On September 7, 2012, [[Roy Fielding]], an author of the Do Not Track standard, [[Commit (version control)|committed]] a patch to the source code of the [[Apache HTTP Server]], which would make the server explicitly ignore any use of the Do Not Track header by users of Internet Explorer 10. Fielding wrote that Microsoft's decision "deliberately violates" the Do Not Track specification because it "does not protect anyone's privacy unless the recipients believe it was set by a real human being, with a real preference for privacy over personalization". The Do Not Track specification did not explicitly mandate that the use of Do Not Track actually be a choice until after the feature was implemented in Internet Explorer 10.<ref>{{cite web |url=https://arstechnica.com/information-technology/2012/08/microsoft-sticks-to-its-guns-keeps-do-not-track-on-by-default-in-ie10/ |title=Microsoft sticks to its guns, keeps Do Not Track on by default in IE10 |website=Ars Technica |date=8 Aug 2012 |access-date=14 May 2013}}</ref> According to Fielding, Microsoft knew its Do Not Track signals would be ignored, and that its goal was to effectively give an illusion of privacy while still catering to their own interests.<ref name=cnet-apachednt>{{cite web |first=Stephen |last=Shankland |title=Apache Web software overrides IE10 do-not-track setting |url=https://www.cnet.com/tech/services-and-software/apache-web-software-overrides-ie10-do-not-track-setting/ |website=CNET |date=7 September 2012|access-date=13 April 2024}}</ref> On October 9, 2012, Fielding's patch was [[comment (computer programming)|commented out]], restoring the previous behavior.<ref>{{cite web|title= Apache Won't Override Do-Not-Track Headers |url= http://www.mediapost.com/publications/article/184855/apache-wont-override-do-not-track-headers.html |date=9 Oct 2012 |publisher= MediaPost Communications |access-date=22 Dec 2012}}</ref><ref>{{Cite web|title=Keep this in, but commented out: also provide a little · apache/httpd@3dd6fb6|url=https://github.com/apache/httpd/commit/3dd6fb6882ae2b453c90d51e777e88bc420a0cb1|website = GitHub|access-date = 4 Jul 2017}}</ref>
On April 3, 2015, Microsoft announced that starting with [[Windows 10]], it would comply with the specification and no longer automatically enable Do Not Track as part of the operating system's "Express" default settings, but that the company will "provide customers with clear information on how to turn this feature on in the browser settings should they wish to do so".<ref name=cw-dntdisabledms>{{cite web|title=Microsoft rolls back commitment to Do Not Track |url=http://www.computerworld.com/article/2905551/microsoft-rolls-back-commitment-to-do-not-track.html|website=Computerworld|date=3 Apr 2015 |publisher=IDG |access-date=3 Apr 2015}}</ref>
== Adoption ==
Very few advertising companies actually supported DNT, due to a lack of regulatory or voluntary requirements for its use,<ref name=bi-gapingflaw>{{cite web|title=Here's The Gaping Flaw in Microsoft's 'Do Not Track' System For IE10|url=http://www.businessinsider.com/heres-the-gaping-flaw-in-microsofts-do-not-track-system-for-ie10-2012-8|website=Business Insider|access-date=8 Sep 2012}}</ref> and unclear standards over how websites should respond to the header. Websites that honor DNT requests include [[Medium (website)|Medium]] and [[Pinterest]].<ref>{{cite web |last1=Bacchus |first1=Arif |title=Millions of People Use 'Do Not Track' Tool Which Does Nothing |url=https://www.digitaltrends.com/computing/do-not-tracking-tools-do-nothing/ |website=Digital Trends |date=15 Oct 2018 |publisher=Designtechnica Corporation |access-date=1 Nov 2019}}</ref> Despite offering the option in its Chrome web browser, [[Google]] did not implement support for DNT on its websites, and directed users to its online privacy settings and opt-outs for interest-based advertising instead.<ref name="gizmodo-doesntdoanything"/> The [[Digital Advertising Alliance]], [[Council of Better Business Bureaus]] and the [[Data & Marketing Association]] does not require its members to honor DNT signals.<ref name="DAA-position">{{cite web|title=Digital Advertising Alliance Gives Guidance to Marketers for Microsoft IE10 'DO NOT TRACK' Default Setting|url=http://www.aboutads.info/blog/digital-advertising-alliance-gives-guidance-marketers-microsoft-ie10-%E2%80%98do-not-track%E2%80%99-default-set|access-date=10 Oct 2012}}</ref>
Use of [[ad blocking]] software to block web trackers and advertising has become increasingly common (with users citing both privacy concerns and performance impact as justification), while Apple and Mozilla began to add privacy enhancements (such as "tracking protection") to their browsers, that are designed to reduce undue cross-site tracking. In addition, laws such as the European Union's [[General Data Protection Regulation]] (GDPR) have imposed restrictions on how companies are to store and process personal information.<ref name="gizmodo-doesntdoanything">{{Cite web|url=https://gizmodo.com/do-not-track-the-privacy-tool-used-by-millions-of-peop-1828868324|title='Do Not Track' Privacy Tool Doesn't Do Anything|website=Gizmodo|date=2018-10-15 |access-date=2019-10-24}}</ref><ref name="Fleishman-2024" />
[[Princeton University]] associate professor of computer science [[Jonathan Mayer]], who was a member of the W3C's working group for DNT, argued that the concept is a "failed experiment".<ref name="gizmodo-doesntdoanything"/>
== Global Privacy Control ==
'''Global Privacy Control''' (GPC) is a proposed [[List of HTTP header fields|HTTP header field]] and [[Document Object Model|DOM property]] that can be used to inform websites of the user's wish to have their information not be sold or used by ad trackers.<ref>{{Cite web |title=Global Privacy Control (GPC) |url=https://privacycg.github.io/gpc-spec/ |access-date=2024-08-17 |website=privacycg.github.io}}</ref> GPC was developed in 2020 by privacy technology researchers such as [[Wesleyan University]] professor [[Sebastian Zimmeck]] and former Chief Technologist of the [[Federal Trade Commission]] [[Ashkan Soltani]], as well as a group of privacy-focused companies including the [[Electronic Frontier Foundation]], [[Automattic]] (owner of [[Tumblr]] and [[WordPress]]), and more.<ref>{{Cite web |title=Frequently Asked Questions {{!}} Global Privacy Control |url=https://globalprivacycontrol.org/faq |access-date=2024-08-17 |website=globalprivacycontrol.org |language=en |quote="Who is supporting the development of GPC?"}}</ref>
The signal has been implemented by [[DuckDuckGo]]'s [[DuckDuckGo Private Browser|private browser]] and extension, ''[[The New York Times]]'', and privacy browser [[Brave (web browser)|Brave]] and is supported by [[Firefox]] creator, [[Mozilla]]<ref>{{Cite web |title=Founding Organizations {{!}} Global Privacy Control |url=https://globalprivacycontrol.org/orgs |access-date=2024-08-17 |website=globalprivacycontrol.org |language=en}}</ref> as well as the [[Attorney General of California|California Attorney General]].<ref name="State-of-California-Department-of-Justice-Office-of-the-Attorney-General-2018">{{Cite web |date=2018-10-15 |title=California Consumer Privacy Act (CCPA) |url=https://oag.ca.gov/privacy/ccpa |access-date=2024-08-17 |website=State of California - Department of Justice - Office of the Attorney General |language=en}}</ref> Notably, [[Google Chrome]] has not yet implemented the signal,<ref>{{Cite web |title=Chrome Privacy Now! |url=https://chromeprivacy.org/ |access-date=2024-08-17 |website=Chrome Privacy Now! |language=en-US}}</ref> despite still allowing users to enable the now depreciated Do Not Track header.<ref>{{Cite web |title=Turn "Do Not Track" on or off |url=https://support.google.com/chrome/answer/2790761 |website=Google Chrome Help |publisher=Google Inc.}}</ref> However, there are third-party extensions available for Chrome if users want to send the GPC header with their requests, including the [[Privacy Badger]] extension by [[Electronic Frontier Foundation|The Electronic Frontier Foundation]],<ref>{{Cite web |title=Privacy Badger |url=https://privacybadger.org/#What-is-Global-Privacy-Control |access-date=2024-08-17 |website=Electronic Frontier Foundation |language=en |quote="What is Global Privacy Control (GPC)?"}}</ref> the [[DuckDuckGo]] Privacy Essentials add-on,<ref>{{Cite web |date=2021-01-28 |title=Global Privacy Control (GPC) Enabled by Default in DuckDuckGo Apps & Extensions |url=https://spreadprivacy.com/global-privacy-control-enabled-by-default/ |access-date=2024-08-17 |website=Spread Privacy |language=en}}</ref> and more.
One key difference between the Do Not Track header and GPC is that GPC is a valid do-not-sell-my-personal-information signal according to the [[California Consumer Privacy Act]] (CCPA), which stipulates that websites are legally required to respect a signal sent by users who want to opt-out of having their personal data sold.<ref name="State-of-California-Department-of-Justice-Office-of-the-Attorney-General-2018" /> In July 2021, the [[Attorney General of California|California Attorney General]] clarified through an FAQ that under law, the Global Privacy Control signal must be honored.<ref name="State-of-California-Department-of-Justice-Office-of-the-Attorney-General-2018" />
On August 24, 2022, the [[Attorney General of California|California Attorney General]] announced [[Sephora]] paid a $1.2-million settlement for allegedly failing to process opt-out requests via a user-enabled global privacy control signal.<ref>{{Cite news |last=Merken |first=Sara |date=2022-08-24 |title=Sephora to pay $1.2 mln in privacy settlement with Calif. AG over data sales |url=https://www.reuters.com/legal/litigation/sephora-pay-12-mln-privacy-settlement-with-calif-ag-over-data-sales-2022-08-24/ |url-status=live |archive-url=https://web.archive.org/web/20230510060201/https://www.reuters.com/legal/litigation/sephora-pay-12-mln-privacy-settlement-with-calif-ag-over-data-sales-2022-08-24/ |archive-date=2023-05-10 |access-date=2024-06-13 |work=[[Reuters]]}}</ref>
== See also ==
* [[Blur (browser extension)]]
* [[P3P]]
* [[Evil bit]]
* {{Slink|List of HTTP header fields|Common non-standard request headers}}
* {{Slink|HTTP cookie|Privacy|Third-party cookie}}
* [[Better Business Bureau]]
* [[Data & Marketing Association]]
== References ==
{{reflist|30em}}
[[Category:Hypertext Transfer Protocol headers]]
[[Category:Internet privacy]]' |
Unified diff of changes made by edit (edit_diff) | '@@ -1,10 +1,4 @@
-{{Short description|HTTP header field}}
-{{use mdy dates|date=July 2023}}
-'''Do Not Track''' ('''DNT''') is a formerly official [[List of HTTP header fields|HTTP header field]], designed to allow internet users to opt out of [[Web tracking|tracking by websites]]—which includes the collection of data regarding a user's activity across multiple distinct contexts, and the retention, use, or sharing of data derived from that activity outside the context in which it occurred.<ref name="Corbin-2010" />
-The Do Not Track header was originally proposed in 2009 by researchers Christopher Soghoian and Sid Stamm.<ref name="Fleishman-2024">{{Cite news |last=Fleishman |first=Glenn |date=2019-03-07 |title=How the tragic death of Do Not Track ruined the web for everyone |url=https://www.fastcompany.com/90308068/how-the-tragic-death-of-do-not-track-ruined-the-web-for-everyone |work=[[Fast Company]]}}</ref> Mozilla Firefox became the first browser to implement the feature. The header didn't find widespread success due to the lack of legislation that would require companies to legally respect the Do Not Track header and most companies and websites not respecting the header when sent by the user.<ref>{{Cite web |last=Goodrich |first=Ben |date=1 May 2012 |title=An Analysis of the 'Do Not Track' Header |url=https://www.cs.tufts.edu/comp/116/archive/bgoodrich.pdf}}</ref>
-
-In 2020,c a coalition of US-based internet companies announced the '''Global Privacy Control''' header that spiritually succeeds Do Not Track header. The creators hope that this new header will meet the definition of "user-enabled global privacy controls" defined by the California Consumer Privacy Act (CCPA) and the European General Data Protection Regulation (GDPR). In this case, the new header would be automatically strengthened by existing laws and companies would be required to honor it.
== Operation ==
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3 => 'The Do Not Track header was originally proposed in 2009 by researchers Christopher Soghoian and Sid Stamm.<ref name="Fleishman-2024">{{Cite news |last=Fleishman |first=Glenn |date=2019-03-07 |title=How the tragic death of Do Not Track ruined the web for everyone |url=https://www.fastcompany.com/90308068/how-the-tragic-death-of-do-not-track-ruined-the-web-for-everyone |work=[[Fast Company]]}}</ref> Mozilla Firefox became the first browser to implement the feature. The header didn't find widespread success due to the lack of legislation that would require companies to legally respect the Do Not Track header and most companies and websites not respecting the header when sent by the user.<ref>{{Cite web |last=Goodrich |first=Ben |date=1 May 2012 |title=An Analysis of the 'Do Not Track' Header |url=https://www.cs.tufts.edu/comp/116/archive/bgoodrich.pdf}}</ref>',
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Parsed HTML source of the new revision (new_html) | '<div class="mw-content-ltr mw-parser-output" lang="en" dir="ltr"><p><br />
</p>
<div id="toc" class="toc" role="navigation" aria-labelledby="mw-toc-heading"><input type="checkbox" role="button" id="toctogglecheckbox" class="toctogglecheckbox" style="display:none" /><div class="toctitle" lang="en" dir="ltr"><h2 id="mw-toc-heading">Contents</h2><span class="toctogglespan"><label class="toctogglelabel" for="toctogglecheckbox"></label></span></div>
<ul>
<li class="toclevel-1 tocsection-1"><a href="#Operation"><span class="tocnumber">1</span> <span class="toctext">Operation</span></a></li>
<li class="toclevel-1 tocsection-2"><a href="#History"><span class="tocnumber">2</span> <span class="toctext">History</span></a>
<ul>
<li class="toclevel-2 tocsection-3"><a href="#Internet_Explorer_10_default_setting_controversy"><span class="tocnumber">2.1</span> <span class="toctext">Internet Explorer 10 default setting controversy</span></a></li>
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<li class="toclevel-1 tocsection-4"><a href="#Adoption"><span class="tocnumber">3</span> <span class="toctext">Adoption</span></a></li>
<li class="toclevel-1 tocsection-5"><a href="#Global_Privacy_Control"><span class="tocnumber">4</span> <span class="toctext">Global Privacy Control</span></a></li>
<li class="toclevel-1 tocsection-6"><a href="#See_also"><span class="tocnumber">5</span> <span class="toctext">See also</span></a></li>
<li class="toclevel-1 tocsection-7"><a href="#References"><span class="tocnumber">6</span> <span class="toctext">References</span></a></li>
</ul>
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<div class="mw-heading mw-heading2"><h2 id="Operation">Operation</h2><span class="mw-editsection">
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<p>The DNT header accepts three values: <code>1</code> in case the user does not want to be tracked <i>(opt-out)</i>, <code>0</code> in case the user consents to be tracked <i>(opt-in)</i>, or <i>null</i> (no header sent) if the user has not expressed a preference. The default behavior required by the standard is not to send the header unless the user enables the setting via their browser or their choice is implied by the use of that specific browser.<sup id="cite_ref-DNT_1-0" class="reference"><a href="#cite_note-DNT-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>
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<div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection">
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<p>In 2007, several consumer advocacy groups asked the U.S. <a href="/https/en.m.wikipedia.org/wiki/Federal_Trade_Commission" title="Federal Trade Commission">Federal Trade Commission</a> (FTC) to create a Do Not Track list for online advertising. The proposal would have required that online advertisers submit their information to the FTC, which would compile a machine-readable list of the <a href="/https/en.m.wikipedia.org/wiki/Domain_name" title="Domain name">domain names</a> used by those companies to place cookies or otherwise track consumers.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>
</p><p>In July 2009, researchers Christopher Soghoian and Sid Stamm implemented support for the Do Not Track header in the Firefox web browser via a prototype add-on. Stamm was, at the time, a privacy engineer at Mozilla, while Soghoian soon afterward started working at the FTC.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> One year later, during a U.S. Senate privacy hearing, FTC Chairman Jon Leibowitz told the Senate Commerce Committee that the commission was exploring the idea of proposing a "do-not-track" list.<sup id="cite_ref-Corbin-2010_4-0" class="reference"><a href="#cite_note-Corbin-2010-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup>
</p><p>In December 2010, the FTC issued a privacy report that called for a "do-not-track" system that would enable people to avoid having their actions being monitored online.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup>
</p><p>One week later, Microsoft announced that its next browser would include support for Tracking Protection Lists that block tracking of consumers using blacklists supplied by third parties.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> In January 2011, Mozilla announced that its Firefox browser would soon provide a Do Not Track solution, via a browser header.<sup id="cite_ref-online_7-0" class="reference"><a href="#cite_note-online-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> Microsoft's <a href="/https/en.m.wikipedia.org/wiki/Internet_Explorer_9" title="Internet Explorer 9">Internet Explorer 9</a>,<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> Apple's Safari,<sup id="cite_ref-Nick_Wingfield_9-0" class="reference"><a href="#cite_note-Nick_Wingfield-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> Opera<sup id="cite_ref-Opera_10-0" class="reference"><a href="#cite_note-Opera-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> and Google Chrome<sup id="cite_ref-longerbattery_11-0" class="reference"><a href="#cite_note-longerbattery-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> all later added support for the header approach.
</p><p>In August 2015 a coalition of privacy groups led by the Electronic Frontier Foundation using <a href="/https/en.m.wikipedia.org/wiki/World_Wide_Web_Consortium" title="World Wide Web Consortium">W3C</a>'s Tracking Preference Expression (DNT) standard proposed that "Do not track" be the goal for advocates to demand of businesses.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup>
</p><p>In January 2019, the W3C Tracking Protection Working Group was disbanded, citing "insufficient deployment of these extensions" and lack of "indications of planned support among user agents, third parties, and the ecosystem at large".<sup id="cite_ref-GitHub_note_W3C_DNT_disbanded_13-0" class="reference"><a href="#cite_note-GitHub_note_W3C_DNT_disbanded-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Gizmodo_Apple_Removing_Do_Not_Track_14-0" class="reference"><a href="#cite_note-Gizmodo_Apple_Removing_Do_Not_Track-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> Beginning the following month, Apple removed DNT support from Safari, citing that it could be used as a "<a href="/https/en.m.wikipedia.org/wiki/Browser_fingerprinting" class="mw-redirect" title="Browser fingerprinting">fingerprinting</a> variable" for tracking.<sup id="cite_ref-apple_fingerprinting_15-0" class="reference"><a href="#cite_note-apple_fingerprinting-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup>
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<div class="mw-heading mw-heading3"><h3 id="Internet_Explorer_10_default_setting_controversy">Internet Explorer 10 default setting controversy</h3><span class="mw-editsection">
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<p>When using the "Express" settings upon installation, a Do Not Track option is enabled by default for <a href="/https/en.m.wikipedia.org/wiki/Internet_Explorer_10" title="Internet Explorer 10">Internet Explorer 10</a> and <a href="/https/en.m.wikipedia.org/wiki/Windows_8" title="Windows 8">Windows 8</a>.<sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> Microsoft faced criticism for its decision to enable Do Not Track by default<sup id="cite_ref-17" class="reference"><a href="#cite_note-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> from advertising companies, who say that use of the Do Not Track header should be a choice made by the user and must not be automatically enabled. The companies also said that this decision would violate the <a href="/https/en.m.wikipedia.org/wiki/Digital_Advertising_Alliance" class="mw-redirect" title="Digital Advertising Alliance">Digital Advertising Alliance</a>'s agreement with the U.S. government to honor a Do Not Track system, because the coalition said it would only honor such a system if it were not enabled by default by web browsers.<sup id="cite_ref-18" class="reference"><a href="#cite_note-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup> A Microsoft spokesperson defended its decision however, stating that users would prefer a web browser that automatically respected their privacy.<sup id="cite_ref-dig-msdnt_19-0" class="reference"><a href="#cite_note-dig-msdnt-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup>
</p><p>On September 7, 2012, <a href="/https/en.m.wikipedia.org/wiki/Roy_Fielding" title="Roy Fielding">Roy Fielding</a>, an author of the Do Not Track standard, <a href="/https/en.m.wikipedia.org/wiki/Commit_(version_control)" title="Commit (version control)">committed</a> a patch to the source code of the <a href="/https/en.m.wikipedia.org/wiki/Apache_HTTP_Server" title="Apache HTTP Server">Apache HTTP Server</a>, which would make the server explicitly ignore any use of the Do Not Track header by users of Internet Explorer 10. Fielding wrote that Microsoft's decision "deliberately violates" the Do Not Track specification because it "does not protect anyone's privacy unless the recipients believe it was set by a real human being, with a real preference for privacy over personalization". The Do Not Track specification did not explicitly mandate that the use of Do Not Track actually be a choice until after the feature was implemented in Internet Explorer 10.<sup id="cite_ref-20" class="reference"><a href="#cite_note-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup> According to Fielding, Microsoft knew its Do Not Track signals would be ignored, and that its goal was to effectively give an illusion of privacy while still catering to their own interests.<sup id="cite_ref-cnet-apachednt_21-0" class="reference"><a href="#cite_note-cnet-apachednt-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup> On October 9, 2012, Fielding's patch was <a href="/https/en.m.wikipedia.org/wiki/Comment_(computer_programming)" title="Comment (computer programming)">commented out</a>, restoring the previous behavior.<sup id="cite_ref-22" class="reference"><a href="#cite_note-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-23" class="reference"><a href="#cite_note-23"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup>
</p><p>On April 3, 2015, Microsoft announced that starting with <a href="/https/en.m.wikipedia.org/wiki/Windows_10" title="Windows 10">Windows 10</a>, it would comply with the specification and no longer automatically enable Do Not Track as part of the operating system's "Express" default settings, but that the company will "provide customers with clear information on how to turn this feature on in the browser settings should they wish to do so".<sup id="cite_ref-cw-dntdisabledms_24-0" class="reference"><a href="#cite_note-cw-dntdisabledms-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup>
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<div class="mw-heading mw-heading2"><h2 id="Adoption">Adoption</h2><span class="mw-editsection">
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<p>Very few advertising companies actually supported DNT, due to a lack of regulatory or voluntary requirements for its use,<sup id="cite_ref-bi-gapingflaw_25-0" class="reference"><a href="#cite_note-bi-gapingflaw-25"><span class="cite-bracket">[</span>25<span class="cite-bracket">]</span></a></sup> and unclear standards over how websites should respond to the header. Websites that honor DNT requests include <a href="/https/en.m.wikipedia.org/wiki/Medium_(website)" title="Medium (website)">Medium</a> and <a href="/https/en.m.wikipedia.org/wiki/Pinterest" title="Pinterest">Pinterest</a>.<sup id="cite_ref-26" class="reference"><a href="#cite_note-26"><span class="cite-bracket">[</span>26<span class="cite-bracket">]</span></a></sup> Despite offering the option in its Chrome web browser, <a href="/https/en.m.wikipedia.org/wiki/Google" title="Google">Google</a> did not implement support for DNT on its websites, and directed users to its online privacy settings and opt-outs for interest-based advertising instead.<sup id="cite_ref-gizmodo-doesntdoanything_27-0" class="reference"><a href="#cite_note-gizmodo-doesntdoanything-27"><span class="cite-bracket">[</span>27<span class="cite-bracket">]</span></a></sup> The <a href="/https/en.m.wikipedia.org/wiki/Digital_Advertising_Alliance" class="mw-redirect" title="Digital Advertising Alliance">Digital Advertising Alliance</a>, <a href="/https/en.m.wikipedia.org/wiki/Council_of_Better_Business_Bureaus" class="mw-redirect" title="Council of Better Business Bureaus">Council of Better Business Bureaus</a> and the <a href="/https/en.m.wikipedia.org/wiki/Data_%26_Marketing_Association" title="Data & Marketing Association">Data & Marketing Association</a> does not require its members to honor DNT signals.<sup id="cite_ref-DAA-position_28-0" class="reference"><a href="#cite_note-DAA-position-28"><span class="cite-bracket">[</span>28<span class="cite-bracket">]</span></a></sup>
</p><p>Use of <a href="/https/en.m.wikipedia.org/wiki/Ad_blocking" title="Ad blocking">ad blocking</a> software to block web trackers and advertising has become increasingly common (with users citing both privacy concerns and performance impact as justification), while Apple and Mozilla began to add privacy enhancements (such as "tracking protection") to their browsers, that are designed to reduce undue cross-site tracking. In addition, laws such as the European Union's <a href="/https/en.m.wikipedia.org/wiki/General_Data_Protection_Regulation" title="General Data Protection Regulation">General Data Protection Regulation</a> (GDPR) have imposed restrictions on how companies are to store and process personal information.<sup id="cite_ref-gizmodo-doesntdoanything_27-1" class="reference"><a href="#cite_note-gizmodo-doesntdoanything-27"><span class="cite-bracket">[</span>27<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-Fleishman-2024_29-0" class="reference"><a href="#cite_note-Fleishman-2024-29"><span class="cite-bracket">[</span>29<span class="cite-bracket">]</span></a></sup>
</p><p><a href="/https/en.m.wikipedia.org/wiki/Princeton_University" title="Princeton University">Princeton University</a> associate professor of computer science <a href="/https/en.m.wikipedia.org/wiki/Jonathan_Mayer" title="Jonathan Mayer">Jonathan Mayer</a>, who was a member of the W3C's working group for DNT, argued that the concept is a "failed experiment".<sup id="cite_ref-gizmodo-doesntdoanything_27-2" class="reference"><a href="#cite_note-gizmodo-doesntdoanything-27"><span class="cite-bracket">[</span>27<span class="cite-bracket">]</span></a></sup>
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<div class="mw-heading mw-heading2"><h2 id="Global_Privacy_Control">Global Privacy Control</h2><span class="mw-editsection">
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<p><b>Global Privacy Control</b> (GPC) is a proposed <a href="/https/en.m.wikipedia.org/wiki/List_of_HTTP_header_fields" title="List of HTTP header fields">HTTP header field</a> and <a href="/https/en.m.wikipedia.org/wiki/Document_Object_Model" title="Document Object Model">DOM property</a> that can be used to inform websites of the user's wish to have their information not be sold or used by ad trackers.<sup id="cite_ref-30" class="reference"><a href="#cite_note-30"><span class="cite-bracket">[</span>30<span class="cite-bracket">]</span></a></sup> GPC was developed in 2020 by privacy technology researchers such as <a href="/https/en.m.wikipedia.org/wiki/Wesleyan_University" title="Wesleyan University">Wesleyan University</a> professor <a href="/https/en.m.wikipedia.org/w/index.php?title=Sebastian_Zimmeck&action=edit&redlink=1" class="new" title="Sebastian Zimmeck (page does not exist)">Sebastian Zimmeck</a> and former Chief Technologist of the <a href="/https/en.m.wikipedia.org/wiki/Federal_Trade_Commission" title="Federal Trade Commission">Federal Trade Commission</a> <a href="/https/en.m.wikipedia.org/wiki/Ashkan_Soltani" title="Ashkan Soltani">Ashkan Soltani</a>, as well as a group of privacy-focused companies including the <a href="/https/en.m.wikipedia.org/wiki/Electronic_Frontier_Foundation" title="Electronic Frontier Foundation">Electronic Frontier Foundation</a>, <a href="/https/en.m.wikipedia.org/wiki/Automattic" title="Automattic">Automattic</a> (owner of <a href="/https/en.m.wikipedia.org/wiki/Tumblr" title="Tumblr">Tumblr</a> and <a href="/https/en.m.wikipedia.org/wiki/WordPress" title="WordPress">WordPress</a>), and more.<sup id="cite_ref-31" class="reference"><a href="#cite_note-31"><span class="cite-bracket">[</span>31<span class="cite-bracket">]</span></a></sup>
</p><p>The signal has been implemented by <a href="/https/en.m.wikipedia.org/wiki/DuckDuckGo" title="DuckDuckGo">DuckDuckGo</a>'s <a href="/https/en.m.wikipedia.org/wiki/DuckDuckGo_Private_Browser" title="DuckDuckGo Private Browser">private browser</a> and extension, <i><a href="/https/en.m.wikipedia.org/wiki/The_New_York_Times" title="The New York Times">The New York Times</a></i>, and privacy browser <a href="/https/en.m.wikipedia.org/wiki/Brave_(web_browser)" title="Brave (web browser)">Brave</a> and is supported by <a href="/https/en.m.wikipedia.org/wiki/Firefox" title="Firefox">Firefox</a> creator, <a href="/https/en.m.wikipedia.org/wiki/Mozilla" title="Mozilla">Mozilla</a><sup id="cite_ref-32" class="reference"><a href="#cite_note-32"><span class="cite-bracket">[</span>32<span class="cite-bracket">]</span></a></sup> as well as the <a href="/https/en.m.wikipedia.org/wiki/Attorney_General_of_California" title="Attorney General of California">California Attorney General</a>.<sup id="cite_ref-State-of-California-Department-of-Justice-Office-of-the-Attorney-General-2018_33-0" class="reference"><a href="#cite_note-State-of-California-Department-of-Justice-Office-of-the-Attorney-General-2018-33"><span class="cite-bracket">[</span>33<span class="cite-bracket">]</span></a></sup> Notably, <a href="/https/en.m.wikipedia.org/wiki/Google_Chrome" title="Google Chrome">Google Chrome</a> has not yet implemented the signal,<sup id="cite_ref-34" class="reference"><a href="#cite_note-34"><span class="cite-bracket">[</span>34<span class="cite-bracket">]</span></a></sup> despite still allowing users to enable the now depreciated Do Not Track header.<sup id="cite_ref-35" class="reference"><a href="#cite_note-35"><span class="cite-bracket">[</span>35<span class="cite-bracket">]</span></a></sup> However, there are third-party extensions available for Chrome if users want to send the GPC header with their requests, including the <a href="/https/en.m.wikipedia.org/wiki/Privacy_Badger" title="Privacy Badger">Privacy Badger</a> extension by <a href="/https/en.m.wikipedia.org/wiki/Electronic_Frontier_Foundation" title="Electronic Frontier Foundation">The Electronic Frontier Foundation</a>,<sup id="cite_ref-36" class="reference"><a href="#cite_note-36"><span class="cite-bracket">[</span>36<span class="cite-bracket">]</span></a></sup> the <a href="/https/en.m.wikipedia.org/wiki/DuckDuckGo" title="DuckDuckGo">DuckDuckGo</a> Privacy Essentials add-on,<sup id="cite_ref-37" class="reference"><a href="#cite_note-37"><span class="cite-bracket">[</span>37<span class="cite-bracket">]</span></a></sup> and more.
</p><p>One key difference between the Do Not Track header and GPC is that GPC is a valid do-not-sell-my-personal-information signal according to the <a href="/https/en.m.wikipedia.org/wiki/California_Consumer_Privacy_Act" title="California Consumer Privacy Act">California Consumer Privacy Act</a> (CCPA), which stipulates that websites are legally required to respect a signal sent by users who want to opt-out of having their personal data sold.<sup id="cite_ref-State-of-California-Department-of-Justice-Office-of-the-Attorney-General-2018_33-1" class="reference"><a href="#cite_note-State-of-California-Department-of-Justice-Office-of-the-Attorney-General-2018-33"><span class="cite-bracket">[</span>33<span class="cite-bracket">]</span></a></sup> In July 2021, the <a href="/https/en.m.wikipedia.org/wiki/Attorney_General_of_California" title="Attorney General of California">California Attorney General</a> clarified through an FAQ that under law, the Global Privacy Control signal must be honored.<sup id="cite_ref-State-of-California-Department-of-Justice-Office-of-the-Attorney-General-2018_33-2" class="reference"><a href="#cite_note-State-of-California-Department-of-Justice-Office-of-the-Attorney-General-2018-33"><span class="cite-bracket">[</span>33<span class="cite-bracket">]</span></a></sup>
</p><p>On August 24, 2022, the <a href="/https/en.m.wikipedia.org/wiki/Attorney_General_of_California" title="Attorney General of California">California Attorney General</a> announced <a href="/https/en.m.wikipedia.org/wiki/Sephora" title="Sephora">Sephora</a> paid a $1.2-million settlement for allegedly failing to process opt-out requests via a user-enabled global privacy control signal.<sup id="cite_ref-38" class="reference"><a href="#cite_note-38"><span class="cite-bracket">[</span>38<span class="cite-bracket">]</span></a></sup>
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<div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection">
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<ul><li><a href="/https/en.m.wikipedia.org/wiki/Blur_(browser_extension)" class="mw-redirect" title="Blur (browser extension)">Blur (browser extension)</a></li>
<li><a href="/https/en.m.wikipedia.org/wiki/P3P" title="P3P">P3P</a></li>
<li><a href="/https/en.m.wikipedia.org/wiki/Evil_bit" title="Evil bit">Evil bit</a></li>
<li><a href="/https/en.m.wikipedia.org/wiki/List_of_HTTP_header_fields#Common_non-standard_request_headers" title="List of HTTP header fields">List of HTTP header fields § Common non-standard request headers</a></li>
<li>HTTP cookie §§ <a href="/https/en.m.wikipedia.org/wiki/HTTP_cookie#Privacy" title="HTTP cookie">Privacy</a>​ and <a href="/https/en.m.wikipedia.org/wiki/HTTP_cookie#Third-party_cookie" title="HTTP cookie">Third-party cookie</a></li>
<li><a href="/https/en.m.wikipedia.org/wiki/Better_Business_Bureau" title="Better Business Bureau">Better Business Bureau</a></li>
<li><a href="/https/en.m.wikipedia.org/wiki/Data_%26_Marketing_Association" title="Data & Marketing Association">Data & Marketing Association</a></li></ul>
<div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection">
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<li id="cite_note-DNT-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-DNT_1-0">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://devdoc.net/web/developer.mozilla.org/en-US/docs/Web/Security/Do_not_track_field_guide.html">"DNT - HTTP"</a><span class="reference-accessdate">. Retrieved <span class="nowrap">2024-10-13</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=DNT+-+HTTP&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttps%2Fdevdoc.net%2Fweb%2Fdeveloper.mozilla.org%2Fen-US%2Fdocs%2FWeb%2FSecurity%2FDo_not_track_field_guide.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.cdt.org/privacy/20071031consumerprotectionsbehavioral.pdf">"The History of the Do Not Track Header"</a> <span class="cs1-format">(PDF)</span>. <i>Center for Democracy and Technology</i>. 2007-10-31<span class="reference-accessdate">. Retrieved <span class="nowrap">22 February</span> 2012</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Center+for+Democracy+and+Technology&rft.atitle=The+History+of+the+Do+Not+Track+Header&rft.date=2007-10-31&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttps%2Fwww.cdt.org%2Fprivacy%2F20071031consumerprotectionsbehavioral.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFZetter2009" class="citation news cs1">Zetter, Kim (2009-08-17). <a rel="nofollow" class="external text" href="https://www.wired.com/threatlevel/2009/08/soghoian-joins-ftc/">"Outspoken Privacy Advocate Joins FTC"</a>. <i>Wired News</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2009-11-20</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Wired+News&rft.atitle=Outspoken+Privacy+Advocate+Joins+FTC&rft.date=2009-08-17&rft.aulast=Zetter&rft.aufirst=Kim&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttps%2Fwww.wired.com%2Fthreatlevel%2F2009%2F08%2Fsoghoian-joins-ftc%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-Corbin-2010-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-Corbin-2010_4-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCorbin2010" class="citation news cs1">Corbin, Kenneth (2010-07-28). <a rel="nofollow" class="external text" href="http://www.internetnews.com/ec-news/article.php/3895496/FTC+Mulls+BrowserBased+Block+for+Online+Ads.htm">"FTC Mulls Browser-Based Block for Online Ads"</a>. <i>Internet News</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2009-11-20</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Internet+News&rft.atitle=FTC+Mulls+Browser-Based+Block+for+Online+Ads&rft.date=2010-07-28&rft.aulast=Corbin&rft.aufirst=Kenneth&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttp%2Fwww.internetnews.com%2Fec-news%2Farticle.php%2F3895496%2FFTC%2BMulls%2BBrowserBased%2BBlock%2Bfor%2BOnline%2BAds.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAngwin2010" class="citation news cs1">Angwin, Julia (2010-12-02). <a rel="nofollow" class="external text" href="https://www.wsj.com/articles/SB10001424052748704594804575648670826747094">"FTC Backs Do-Not-Track System for Web"</a>. <i>Wall Street Journal</i><span class="reference-accessdate">. Retrieved <span class="nowrap">22 February</span> 2012</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Wall+Street+Journal&rft.atitle=FTC+Backs+Do-Not-Track+System+for+Web&rft.date=2010-12-02&rft.aulast=Angwin&rft.aufirst=Julia&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttps%2Fwww.wsj.com%2Farticles%2FSB10001424052748704594804575648670826747094&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAngwin2010" class="citation news cs1">Angwin, Julia (2010-12-07). <a rel="nofollow" class="external text" href="https://www.wsj.com/articles/SB10001424052748703296604576005542201534546">"Microsoft to Add 'Tracking Protection' to Web Browser"</a>. <i>Wall Street Journal</i><span class="reference-accessdate">. Retrieved <span class="nowrap">22 February</span> 2012</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Wall+Street+Journal&rft.atitle=Microsoft+to+Add+%27Tracking+Protection%27+to+Web+Browser&rft.date=2010-12-07&rft.aulast=Angwin&rft.aufirst=Julia&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttps%2Fwww.wsj.com%2Farticles%2FSB10001424052748703296604576005542201534546&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-online-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-online_7-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFJulia_Angwin2011" class="citation news cs1"><a href="/https/en.m.wikipedia.org/wiki/Julia_Angwin" title="Julia Angwin">Julia Angwin</a> (2011-01-21). <a rel="nofollow" class="external text" href="https://www.wsj.com/articles/SB10001424052748704213404576100441609997236">"Web Tool On Firefox To Deter Tracking"</a>. <i>Wall Street Journal</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2012-02-22</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Wall+Street+Journal&rft.atitle=Web+Tool+On+Firefox+To+Deter+Tracking&rft.date=2011-01-21&rft.au=Julia+Angwin&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttps%2Fwww.wsj.com%2Farticles%2FSB10001424052748704213404576100441609997236&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-8">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAngwin2011" class="citation news cs1">Angwin, Julia (2011-03-15). <a rel="nofollow" class="external text" href="https://www.wsj.com/articles/SB10001424052748703363904576200981919667762">"Microsoft Adds Do-Not-Track Tool to Browser"</a>. <i>Wall Street Journal</i><span class="reference-accessdate">. Retrieved <span class="nowrap">22 February</span> 2012</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Wall+Street+Journal&rft.atitle=Microsoft+Adds+Do-Not-Track+Tool+to+Browser&rft.date=2011-03-15&rft.aulast=Angwin&rft.aufirst=Julia&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttps%2Fwww.wsj.com%2Farticles%2FSB10001424052748703363904576200981919667762&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-Nick_Wingfield-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-Nick_Wingfield_9-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFNick_Wingfield2011" class="citation journal cs1">Nick Wingfield (2011-04-14). <a rel="nofollow" class="external text" href="https://www.wsj.com/articles/SB10001424052748703551304576261272308358858">"Apple Adds Do-Not-Track Tool to New Browser"</a>. <i>Wall Street Journal</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2011-04-14</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Wall+Street+Journal&rft.atitle=Apple+Adds+Do-Not-Track+Tool+to+New+Browser&rft.date=2011-04-14&rft.au=Nick+Wingfield&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttps%2Fwww.wsj.com%2Farticles%2FSB10001424052748703551304576261272308358858&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-Opera-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-Opera_10-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFOpera_Desktop_Team2012" class="citation web cs1">Opera Desktop Team (2012-02-11). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20130310122003/http://my.opera.com/desktopteam/blog/2012/02/10/core-dnt-mail-themes">"Core update with Do Not Track, and mail and theme fixes"</a>. <i>Opera blog</i>. Archived from <a rel="nofollow" class="external text" href="http://my.opera.com/desktopteam/blog/2012/02/10/core-dnt-mail-themes">the original</a> on 2013-03-10<span class="reference-accessdate">. Retrieved <span class="nowrap">2012-02-10</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Opera+blog&rft.atitle=Core+update+with+Do+Not+Track%2C+and+mail+and+theme+fixes&rft.date=2012-02-11&rft.au=Opera+Desktop+Team&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttp%2Fmy.opera.com%2Fdesktopteam%2Fblog%2F2012%2F02%2F10%2Fcore-dnt-mail-themes&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-longerbattery-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-longerbattery_11-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://chrome.googleblog.com/2012/11/longer-battery-life-and-easier-website.html">"Longer battery life and easier website permissions"</a>. <i>Chrome blog</i>. 2012-11-06<span class="reference-accessdate">. Retrieved <span class="nowrap">2012-11-07</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Chrome+blog&rft.atitle=Longer+battery+life+and+easier+website+permissions&rft.date=2012-11-06&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttps%2Fchrome.googleblog.com%2F2012%2F11%2Flonger-battery-life-and-easier-website.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-12">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAbel2015" class="citation web cs1">Abel, Jennifer (6 Aug 2015). <a rel="nofollow" class="external text" href="http://www.consumeraffairs.com/news/privacy-groups-offer-do-not-track-compromise-will-online-advertisers-and-publishers-accept-it-080615.html">"Privacy groups offer "Do Not Track" compromise; will online advertisers and publishers accept it?"</a>. <i><a href="/https/en.m.wikipedia.org/wiki/ConsumerAffairs" title="ConsumerAffairs">ConsumerAffairs</a></i><span class="reference-accessdate">. Retrieved <span class="nowrap">10 Aug</span> 2015</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=ConsumerAffairs&rft.atitle=Privacy+groups+offer+%22Do+Not+Track%22+compromise%3B+will+online+advertisers+and+publishers+accept+it%3F&rft.date=2015-08-06&rft.aulast=Abel&rft.aufirst=Jennifer&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttp%2Fwww.consumeraffairs.com%2Fnews%2Fprivacy-groups-offer-do-not-track-compromise-will-online-advertisers-and-publishers-accept-it-080615.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-GitHub_note_W3C_DNT_disbanded-13"><span class="mw-cite-backlink"><b><a href="#cite_ref-GitHub_note_W3C_DNT_disbanded_13-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://github.com/w3c/dnt/commit/5d85d6c3d116b5eb29fddc69352a77d87dfd2310">"WG closed · w3c/dnt@5d85d6c"</a>. <i>GitHub</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2019-02-07</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=GitHub&rft.atitle=WG+closed+%C2%B7+w3c%2Fdnt%405d85d6c&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttps%2Fgithub.com%2Fw3c%2Fdnt%2Fcommit%2F5d85d6c3d116b5eb29fddc69352a77d87dfd2310&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-Gizmodo_Apple_Removing_Do_Not_Track-14"><span class="mw-cite-backlink"><b><a href="#cite_ref-Gizmodo_Apple_Removing_Do_Not_Track_14-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFHill2019" class="citation web cs1">Hill, Kashmir (2019-02-06). <a rel="nofollow" class="external text" href="https://gizmodo.com/apple-is-removing-do-not-track-from-safari-1832400768">"Apple Is Removing 'Do Not Track' From Safari"</a>. <i>Gizmodo</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2019-02-07</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Gizmodo&rft.atitle=Apple+Is+Removing+%27Do+Not+Track%27+From+Safari&rft.date=2019-02-06&rft.aulast=Hill&rft.aufirst=Kashmir&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttps%2Fgizmodo.com%2Fapple-is-removing-do-not-track-from-safari-1832400768&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-apple_fingerprinting-15"><span class="mw-cite-backlink"><b><a href="#cite_ref-apple_fingerprinting_15-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.macworld.com/article/3338152/apple-safari-removing-do-not-track.html">"Apple is removing the Do Not Track toggle from Safari, but for a good reason"</a>. <i>Macworld</i>. 2019-02-07<span class="reference-accessdate">. Retrieved <span class="nowrap">2019-10-24</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Macworld&rft.atitle=Apple+is+removing+the+Do+Not+Track+toggle+from+Safari%2C+but+for+a+good+reason&rft.date=2019-02-07&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttps%2Fwww.macworld.com%2Farticle%2F3338152%2Fapple-safari-removing-do-not-track.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-16"><span class="mw-cite-backlink"><b><a href="#cite_ref-16">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation news cs1"><a rel="nofollow" class="external text" href="https://www.pcmag.com/article2/0,2817,2412077,00.asp">"Internet Explorer 10 Released for Windows 7"</a>. <i>PC Magazine</i>. 13 Nov 2012<span class="reference-accessdate">. Retrieved <span class="nowrap">22 Dec</span> 2012</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=PC+Magazine&rft.atitle=Internet+Explorer+10+Released+for+Windows+7&rft.date=2012-11-13&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttps%2Fwww.pcmag.com%2Farticle2%2F0%2C2817%2C2412077%2C00.asp&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-17"><span class="mw-cite-backlink"><b><a href="#cite_ref-17">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBrendon_Lynch2012" class="citation web cs1">Brendon Lynch (2012-08-07). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20120808130947/http://blogs.technet.com/b/microsoft_on_the_issues/archive/2012/08/07/do-not-track-in-the-windows-8-set-up-experience.aspx">"Do Not Track in the Windows 8 Setup Experience"</a>. <i>Microsoft on the issues blog</i>. Archived from <a rel="nofollow" class="external text" href="http://blogs.technet.com/b/microsoft_on_the_issues/archive/2012/08/07/do-not-track-in-the-windows-8-set-up-experience.aspx">the original</a> on 2012-08-08.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Microsoft+on+the+issues+blog&rft.atitle=Do+Not+Track+in+the+Windows+8+Setup+Experience&rft.date=2012-08-07&rft.au=Brendon+Lynch&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttp%2Fblogs.technet.com%2Fb%2Fmicrosoft_on_the_issues%2Farchive%2F2012%2F08%2F07%2Fdo-not-track-in-the-windows-8-set-up-experience.aspx&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-18"><span class="mw-cite-backlink"><b><a href="#cite_ref-18">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://news.cnet.com/8301-10805_3-57445568-75/microsoft-ticks-off-advertisers-with-ie10-do-not-track-policy/">"Microsoft ticks off advertisers with IE10 'Do Not Track' policy"</a>. <i>CNET</i>. 1 Jun 2012<span class="reference-accessdate">. Retrieved <span class="nowrap">8 Sep</span> 2012</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=CNET&rft.atitle=Microsoft+ticks+off+advertisers+with+IE10+%27Do+Not+Track%27+policy&rft.date=2012-06-01&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttp%2Fnews.cnet.com%2F8301-10805_3-57445568-75%2Fmicrosoft-ticks-off-advertisers-with-ie10-do-not-track-policy%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-dig-msdnt-19"><span class="mw-cite-backlink"><b><a href="#cite_ref-dig-msdnt_19-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation news cs1"><a rel="nofollow" class="external text" href="https://blogs.wsj.com/digits/2012/05/31/microsofts-do-not-track-move-angers-advertising-industry/">"Microsoft's "Do Not Track" Move Angers Advertising Industry"</a>. <i>Digits</i>. The Wall Street Journal<span class="reference-accessdate">. Retrieved <span class="nowrap">8 Sep</span> 2012</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Digits&rft.atitle=Microsoft%27s+%22Do+Not+Track%22+Move+Angers+Advertising+Industry&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttps%2Fblogs.wsj.com%2Fdigits%2F2012%2F05%2F31%2Fmicrosofts-do-not-track-move-angers-advertising-industry%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-20"><span class="mw-cite-backlink"><b><a href="#cite_ref-20">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://arstechnica.com/information-technology/2012/08/microsoft-sticks-to-its-guns-keeps-do-not-track-on-by-default-in-ie10/">"Microsoft sticks to its guns, keeps Do Not Track on by default in IE10"</a>. <i>Ars Technica</i>. 8 Aug 2012<span class="reference-accessdate">. Retrieved <span class="nowrap">14 May</span> 2013</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Ars+Technica&rft.atitle=Microsoft+sticks+to+its+guns%2C+keeps+Do+Not+Track+on+by+default+in+IE10&rft.date=2012-08-08&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttps%2Farstechnica.com%2Finformation-technology%2F2012%2F08%2Fmicrosoft-sticks-to-its-guns-keeps-do-not-track-on-by-default-in-ie10%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-cnet-apachednt-21"><span class="mw-cite-backlink"><b><a href="#cite_ref-cnet-apachednt_21-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFShankland2012" class="citation web cs1">Shankland, Stephen (7 September 2012). <a rel="nofollow" class="external text" href="https://www.cnet.com/tech/services-and-software/apache-web-software-overrides-ie10-do-not-track-setting/">"Apache Web software overrides IE10 do-not-track setting"</a>. <i>CNET</i><span class="reference-accessdate">. Retrieved <span class="nowrap">13 April</span> 2024</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=CNET&rft.atitle=Apache+Web+software+overrides+IE10+do-not-track+setting&rft.date=2012-09-07&rft.aulast=Shankland&rft.aufirst=Stephen&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttps%2Fwww.cnet.com%2Ftech%2Fservices-and-software%2Fapache-web-software-overrides-ie10-do-not-track-setting%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-22"><span class="mw-cite-backlink"><b><a href="#cite_ref-22">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.mediapost.com/publications/article/184855/apache-wont-override-do-not-track-headers.html">"Apache Won't Override Do-Not-Track Headers"</a>. MediaPost Communications. 9 Oct 2012<span class="reference-accessdate">. Retrieved <span class="nowrap">22 Dec</span> 2012</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Apache+Won%27t+Override+Do-Not-Track+Headers&rft.pub=MediaPost+Communications&rft.date=2012-10-09&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttp%2Fwww.mediapost.com%2Fpublications%2Farticle%2F184855%2Fapache-wont-override-do-not-track-headers.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-23"><span class="mw-cite-backlink"><b><a href="#cite_ref-23">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://github.com/apache/httpd/commit/3dd6fb6882ae2b453c90d51e777e88bc420a0cb1">"Keep this in, but commented out: also provide a little · apache/httpd@3dd6fb6"</a>. <i>GitHub</i><span class="reference-accessdate">. Retrieved <span class="nowrap">4 Jul</span> 2017</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=GitHub&rft.atitle=Keep+this+in%2C+but+commented+out%3A+also+provide+a+little+%C2%B7+apache%2Fhttpd%403dd6fb6&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttps%2Fgithub.com%2Fapache%2Fhttpd%2Fcommit%2F3dd6fb6882ae2b453c90d51e777e88bc420a0cb1&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-cw-dntdisabledms-24"><span class="mw-cite-backlink"><b><a href="#cite_ref-cw-dntdisabledms_24-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.computerworld.com/article/2905551/microsoft-rolls-back-commitment-to-do-not-track.html">"Microsoft rolls back commitment to Do Not Track"</a>. <i>Computerworld</i>. IDG. 3 Apr 2015<span class="reference-accessdate">. Retrieved <span class="nowrap">3 Apr</span> 2015</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Computerworld&rft.atitle=Microsoft+rolls+back+commitment+to+Do+Not+Track&rft.date=2015-04-03&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttp%2Fwww.computerworld.com%2Farticle%2F2905551%2Fmicrosoft-rolls-back-commitment-to-do-not-track.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-bi-gapingflaw-25"><span class="mw-cite-backlink"><b><a href="#cite_ref-bi-gapingflaw_25-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.businessinsider.com/heres-the-gaping-flaw-in-microsofts-do-not-track-system-for-ie10-2012-8">"Here's The Gaping Flaw in Microsoft's 'Do Not Track' System For IE10"</a>. <i>Business Insider</i><span class="reference-accessdate">. Retrieved <span class="nowrap">8 Sep</span> 2012</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Business+Insider&rft.atitle=Here%27s+The+Gaping+Flaw+in+Microsoft%27s+%27Do+Not+Track%27+System+For+IE10&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttp%2Fwww.businessinsider.com%2Fheres-the-gaping-flaw-in-microsofts-do-not-track-system-for-ie10-2012-8&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-26"><span class="mw-cite-backlink"><b><a href="#cite_ref-26">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBacchus2018" class="citation web cs1">Bacchus, Arif (15 Oct 2018). <a rel="nofollow" class="external text" href="https://www.digitaltrends.com/computing/do-not-tracking-tools-do-nothing/">"Millions of People Use 'Do Not Track' Tool Which Does Nothing"</a>. <i>Digital Trends</i>. Designtechnica Corporation<span class="reference-accessdate">. Retrieved <span class="nowrap">1 Nov</span> 2019</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Digital+Trends&rft.atitle=Millions+of+People+Use+%27Do+Not+Track%27+Tool+Which+Does+Nothing&rft.date=2018-10-15&rft.aulast=Bacchus&rft.aufirst=Arif&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttps%2Fwww.digitaltrends.com%2Fcomputing%2Fdo-not-tracking-tools-do-nothing%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-gizmodo-doesntdoanything-27"><span class="mw-cite-backlink">^ <a href="#cite_ref-gizmodo-doesntdoanything_27-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-gizmodo-doesntdoanything_27-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-gizmodo-doesntdoanything_27-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://gizmodo.com/do-not-track-the-privacy-tool-used-by-millions-of-peop-1828868324">"<span class="cs1-kern-left"></span>'Do Not Track' Privacy Tool Doesn't Do Anything"</a>. <i>Gizmodo</i>. 2018-10-15<span class="reference-accessdate">. Retrieved <span class="nowrap">2019-10-24</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Gizmodo&rft.atitle=%27Do+Not+Track%27+Privacy+Tool+Doesn%27t+Do+Anything&rft.date=2018-10-15&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttps%2Fgizmodo.com%2Fdo-not-track-the-privacy-tool-used-by-millions-of-peop-1828868324&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-DAA-position-28"><span class="mw-cite-backlink"><b><a href="#cite_ref-DAA-position_28-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.aboutads.info/blog/digital-advertising-alliance-gives-guidance-marketers-microsoft-ie10-%E2%80%98do-not-track%E2%80%99-default-set">"Digital Advertising Alliance Gives Guidance to Marketers for Microsoft IE10 'DO NOT TRACK' Default Setting"</a><span class="reference-accessdate">. Retrieved <span class="nowrap">10 Oct</span> 2012</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Digital+Advertising+Alliance+Gives+Guidance+to+Marketers+for+Microsoft+IE10+%27DO+NOT+TRACK%27+Default+Setting&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttp%2Fwww.aboutads.info%2Fblog%2Fdigital-advertising-alliance-gives-guidance-marketers-microsoft-ie10-%25E2%2580%2598do-not-track%25E2%2580%2599-default-set&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-Fleishman-2024-29"><span class="mw-cite-backlink"><b><a href="#cite_ref-Fleishman-2024_29-0">^</a></b></span> <span class="error mw-ext-cite-error" lang="en" dir="ltr">Cite error: The named reference <code>Fleishman-2024</code> was invoked but never defined (see the <a href="/https/en.m.wikipedia.org/wiki/Help:Cite_errors/Cite_error_references_no_text" title="Help:Cite errors/Cite error references no text">help page</a>).</span></li>
<li id="cite_note-30"><span class="mw-cite-backlink"><b><a href="#cite_ref-30">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://privacycg.github.io/gpc-spec/">"Global Privacy Control (GPC)"</a>. <i>privacycg.github.io</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2024-08-17</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=privacycg.github.io&rft.atitle=Global+Privacy+Control+%28GPC%29&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttps%2Fprivacycg.github.io%2Fgpc-spec%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-31"><span class="mw-cite-backlink"><b><a href="#cite_ref-31">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://globalprivacycontrol.org/faq">"Frequently Asked Questions | Global Privacy Control"</a>. <i>globalprivacycontrol.org</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2024-08-17</span></span>. <q>Who is supporting the development of GPC?</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=globalprivacycontrol.org&rft.atitle=Frequently+Asked+Questions+%7C+Global+Privacy+Control&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttps%2Fglobalprivacycontrol.org%2Ffaq&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-32"><span class="mw-cite-backlink"><b><a href="#cite_ref-32">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://globalprivacycontrol.org/orgs">"Founding Organizations | Global Privacy Control"</a>. <i>globalprivacycontrol.org</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2024-08-17</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=globalprivacycontrol.org&rft.atitle=Founding+Organizations+%7C+Global+Privacy+Control&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttps%2Fglobalprivacycontrol.org%2Forgs&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-State-of-California-Department-of-Justice-Office-of-the-Attorney-General-2018-33"><span class="mw-cite-backlink">^ <a href="#cite_ref-State-of-California-Department-of-Justice-Office-of-the-Attorney-General-2018_33-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-State-of-California-Department-of-Justice-Office-of-the-Attorney-General-2018_33-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-State-of-California-Department-of-Justice-Office-of-the-Attorney-General-2018_33-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://oag.ca.gov/privacy/ccpa">"California Consumer Privacy Act (CCPA)"</a>. <i>State of California - Department of Justice - Office of the Attorney General</i>. 2018-10-15<span class="reference-accessdate">. Retrieved <span class="nowrap">2024-08-17</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=State+of+California+-+Department+of+Justice+-+Office+of+the+Attorney+General&rft.atitle=California+Consumer+Privacy+Act+%28CCPA%29&rft.date=2018-10-15&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttps%2Foag.ca.gov%2Fprivacy%2Fccpa&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-34"><span class="mw-cite-backlink"><b><a href="#cite_ref-34">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://chromeprivacy.org/">"Chrome Privacy Now!"</a>. <i>Chrome Privacy Now!</i><span class="reference-accessdate">. Retrieved <span class="nowrap">2024-08-17</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Chrome+Privacy+Now%21&rft.atitle=Chrome+Privacy+Now%21&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttps%2Fchromeprivacy.org%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-35"><span class="mw-cite-backlink"><b><a href="#cite_ref-35">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://support.google.com/chrome/answer/2790761">"Turn "Do Not Track" on or off"</a>. <i>Google Chrome Help</i>. Google Inc.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Google+Chrome+Help&rft.atitle=Turn+%22Do+Not+Track%22+on+or+off&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttps%2Fsupport.google.com%2Fchrome%2Fanswer%2F2790761&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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<li id="cite_note-38"><span class="mw-cite-backlink"><b><a href="#cite_ref-38">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMerken2022" class="citation news cs1">Merken, Sara (2022-08-24). <a rel="nofollow" class="external text" href="https://www.reuters.com/legal/litigation/sephora-pay-12-mln-privacy-settlement-with-calif-ag-over-data-sales-2022-08-24/">"Sephora to pay $1.2 mln in privacy settlement with Calif. AG over data sales"</a>. <i><a href="/https/en.m.wikipedia.org/wiki/Reuters" title="Reuters">Reuters</a></i>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20230510060201/https://www.reuters.com/legal/litigation/sephora-pay-12-mln-privacy-settlement-with-calif-ag-over-data-sales-2022-08-24/">Archived</a> from the original on 2023-05-10<span class="reference-accessdate">. Retrieved <span class="nowrap">2024-06-13</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Reuters&rft.atitle=Sephora+to+pay+%241.2+mln+in+privacy+settlement+with+Calif.+AG+over+data+sales&rft.date=2022-08-24&rft.aulast=Merken&rft.aufirst=Sara&rft_id=https%3A%2F%2Fsummer-heart-0930.chufeiyun1688.workers.dev%3A443%2Fhttps%2Fwww.reuters.com%2Flegal%2Flitigation%2Fsephora-pay-12-mln-privacy-settlement-with-calif-ag-over-data-sales-2022-08-24%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ADo+Not+Track" class="Z3988"></span></span>
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</ol></div></div>' |
Whether or not the change was made through a Tor exit node (tor_exit_node) | false |
Unix timestamp of change (timestamp) | '1729564539' |
