Thursday, June 22, 2017

German signals intelligence successes during operation Barbarossa

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On June 22 1941 the military forces of Nazi Germany attacked the Soviet Union , thus starting the largest land campaign in history. Cod...
Saturday, June 10, 2017

Information on the Enigma cipher machine found in the War Diary of Inspectorate 7/VI

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During WWII the German Army made extensive use of signals intelligence and codebreaking in its operations against enemy forces. German comm...
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Friday, June 9, 2017

Secure ciphers - Insecure messages

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In the construction and use of tactical cryptosystems there are two conflicting requirements. One is security and the other is ease of use....
Sunday, June 4, 2017

6 June 1944 – Allied plans, German intelligence and allocation of German units

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With the anniversary of the Allied landings in Normandy coming up, it’s time to read up on some aspects of the battle that have been overl...
Saturday, May 27, 2017

The compromise of Greek partisan radio communications in WWII

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A history lesson At the start of WWII the Kingdom of Greece , ruled by Ioannis Metaxas  (head of the 4th of August Regime ) followed a...
Thursday, May 25, 2017

Interesting information in TICOM report I-170

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The NSA has declassified the TICOM report I-170 ‘Report on French and Greek Systems by Oberwachtmeister Dr. Otto Karl Winkler of OKH/FNAST ...
Thursday, May 18, 2017

The progress of my old NSA freedom of information act cases or alternatively ήμουν νιος και γέρασα…

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So far my remaining cases with the NSA FOIA office can be broken into two groups. One concerns requests I made in 2015 and these seem to be...
Saturday, May 6, 2017

Update

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I’ve added information from TICOM report I-26 ‘ Interrogation of Oblt. Schubert (OKH/Chef HNW/Gen.d.NA) on Russian Military and Agents’ sys...