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To: TobagoJack who wrote (101167)6/17/2013 5:59:12 AM
From: Snowshoe  Read Replies (1) of 217616
 
Team USA pulled off a great hack against the Japanese at the Washington Naval Conference in the early 1920s. It cost them three battleships, but our Secretary of State flipped out... :o)

Herbert Yardley
en.wikipedia.org

The information the Cipher Bureau provided the American delegation regarding the Japanese government's absolute minimum acceptable battleship requirements was instrumental in getting the Japanese side to agree to a 5:3 ratio instead of the 10:7 ratio the Japanese Navy really wanted. This allowed Japan only 18 battleships to 30 for the U.S. and 30 for Great Britain instead of the 21 battleships Japan desired. This was the height of Yardley's cryptanalytic career.


*****

However, it was moral indignation that finally doomed the bureau. When Henry L. Stimson, Secretary of State under President Herbert Hoover, found out about Yardley and the Cipher Bureau, he was furious and withdrew funding, summing up his argument with "Gentlemen do not read each other's mail". [4] Some believe that Stimson was most offended when Yardley bragged that he could read all traffic of the Vatican, for it was after this remark Stimson turned and left the room.
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