Cryptologic Bytes

"On This Date in Cryptologic History" Calendar

1921: William Friedman at Office of the Chief Signal Officer

Tuesday, December 31, 2024

On this date in 1921 - William Friedman became the first civilian cryptanalyst with the Office of the Chief Signal Officer. Friedman was a prolific author, teacher, and practitioner of cryptology. Much of what is done today at the National Security Agency may be traced to his pioneering efforts.

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