Brian Jones
Every once in a while a mention of an @appendixjournal story still pops up in my feeds. adactio.com/links/11798
The Invention of Wireless Cryptography—The Appendix
A marvellous story of early twentieth century espionage over the airwaves.
In one proposal, hidden instructions were interspersed within regular, ordinary-looking messages by slightly lengthening the spaces between dots and dashes.
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Related links
The Woman Who Smashed Codes - Jason Fagone - Hardcover
This book—released today—looks right up my alley.
After World War I, Smith used her talents to catch gangsters and smugglers during Prohibition, then accepted a covert mission to discover and expose Nazi spy rings that were spreading like wildfire across South America, advancing ever closer to the United States. As World War II raged, Elizebeth fought a highly classified battle of wits against Hitler’s Reich, cracking multiple versions of the Enigma machine used by German spies.