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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

1983: Terrorists at Marine Compound in Beirut

Thursday, October 23, 2025

23 October 1983: Terrorists destroyed the Marine compound in Beirut, killing 241 American servicemen.

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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.