Tag index

#Cryptanalysis

Events indexed under #Cryptanalysis — 2 entries in the record.

2 events From Oct 31, 1929 To Feb 1, 1943 Open in filter view →
DateEventLanesStatus
1943-02-01Army Signal Intelligence Service Begins VENONA Soviet Cable Decryption, Foundation for Post-War Counterintelligence
Gene Grabeel · Meredith Gardner · Army Signal Intelligence Service · Carter Clarke · +2
confirmed
1929-10-31Stimson Closes Yardley's Black Chamber, Briefly Interrupting U.S. Peacetime Signals Intelligence
Henry L. Stimson · Herbert O. Yardley · State Department · War Department · +1
confirmed