FBI / Spy games · History
The FBI’s Fake Office Put Nazi Spies on Film
Germany sent William Sebold to New York as an agent. His handlers’ messages and his visitors were soon passing through an FBI trap.
SPY REGISTER
United States
NSA / Spy life · History
Six Messages Gave Genevieve Grotjan a Way Into Japan’s Secret Code
Her discovery opened PURPLE. Her next breakthrough helped unlock KGB traffic.
NSA / Power & scandal · History
Herbert Yardley Turned America’s Codebreaking Secrets Into a Bestseller
Washington closed his bureau. Its former chief put the operation into print.
GCHQ / Cyber & technology · History
Germany Offered Mexico Three American States. British Codebreakers Read the Offer.
The Zimmermann Telegram became a diplomatic weapon in 1917. London first had to hide how it had acquired it.