Close
Menu

Cryptologic Bytes

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

1975: STONEHOUSE site officially closed.

Tuesday, March 4, 2025

4 March 1975: STONEHOUSE site officially closed. The signals collection site was located in Asmara, Ethiopia and closed prematurely due to civil war.

Learn more via the NSA.gov STONEHOUSE PDF - linked below.

Related Links
Return to Calendar

VISIT THE ARCHIVES

Check out the Cryptologic Bytes Archives for a wide variety of articles on all topics related to cryptology, codes and ciphers, related publications, Museums, and more.