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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

1957: First NSA Open House

Sunday, September 21, 2025

21 September 1957: The NSA hosted its first open house.

Photo is of the NSA Ops Building from NSA.gov.

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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.