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Cryptologic History

Every little bit helps the NCF to influence the cryptologic future by sharing our educational resources, stimulating new knowledge, and commemorating our heritage.

"On This Date in Cryptologic History" Calendar

1863: US govt took control of commercial telegraphs during Civil War.

Wednesday, February 25, 2026

25 February 1863: The U.S. Government took control of commercial telegraph companies for the duration of the Civil War.

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Learn About the Pioneers

Learn about the various individuals and groups who paved the way in the field of cryptology, cyber, computers, and more.