Christos military and intelligence corner

The NSA FOIA office has released the TICOM report DF-240 ‘Characteristics, Analysis and security of cryptographic systems’. Google drive l...

Several reports on NSA cryptanalytic computers have been uploaded to the NSA website: https://www.nsa.gov/news-features/declassified-doc...

The following interesting articles cover important aspects of Soviet cryptologic history: The birth of Soviet cryptography Cryptana...

In The Japanese FUJI diplomatic cipher 1941-43 I’ve added the following: 1).  In ‘Allied exploitation of the improved J series codes’:...

In Compromise of Greek military and diplomatic communications in WWII I’ve added the following: A Greek file dated 1938 (1) mentions th...

The TICOM report I-137 ‘Final report written by Wachtmeister Otto Buggisch of OKH/Chi and OKW/Chi’ that I recently uploaded was missing pag...

Signals intelligence and codebreaking played an important role in WWII. British and American codebreakers solved many important Axis crypto...

The NSA FOIA office has released the following TICOM reports: I-31 ‘Detailed interrogations of Dr. Hüttenhain, formerly head of researc...