VICE interview with Edward Snowden
And related article Snowden Tried to Tell NSA About Surveillance Concerns, Documents Reveal
View ArticleInteresting articles
Here are some recent articles that I found interesting:Breaking “Tirpitz”: Cryptanalysis of the Japanese-German joint naval cipherStates by secrecy: Cryptography and guerrillas in the Spanish Civil...
View Article22 June 1941 - Operation Barbarossa
On June 22 1941 the forces of Nazi Germany attacked the Soviet Union. This was the largest land campaign in history and casualties on both sides number in the tens of millions.Some interesting aspects...
View ArticleVictory!
I recently presented new information on the use of the M-138-A strip cipher by the State Department in the period 1940-44. However there was a small problem! The entries for the second half of 1944...
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Missing paragraphs from TICOM report I-22 ‘Interrogation of German...
I uploaded TICOM report I-22 back in 2012, however my copy from the British national archives had several paragraphs deleted in pages 16-18.I don’t like loose ends, so i was able to copy the same pages...
View ArticleFinding aid for the National Cryptologic Museum Library
A list of the books, reports and other files available at the National Cryptologic Museum Library has been uploaded at the NSA website.I’ve added the file to my Google Drive and Scribd folders.
View ArticleJuly 2011 to July 2016 - 5 years of Christos military and intelligence corner
This July marks 5 years since I created the Christos military and intelligence corner blogsite. During this time I’ve written many essays on WWII military, economic and intelligence history, I have...
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Book review – ‘Code Warriors: NSA's Codebreakers and the Secret Intelligence...
Stephen Budiansky, author of ‘Battle of Wits: The Complete Story of Codebreaking in World War II’ and ‘Blackett's War: The Men Who Defeated the Nazi U-Boats and Brought Science to the Art of Warfare’...
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Netherlands Intelligence Studies Association 25th anniversary conference 1991...
On Friday 28 and Saturday 29 October 2016 the Netherlands Intelligence Studies Association (NISA) celebrates its 25th anniversary with an inspiring two-days conference. Main theme is the strongly...
View ArticleUpdate
I’ve added information in New developments in the strip cipher case and Compromise of the State Department’s M-138-A strip cipher and the traffic of other US agencies.
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The US military attaché double transposition cipher
In The compromise of the communications of General Barnwell R. Legge, US military attache to Switzerland I’ve added the following:Apart from the standard cryptosystems (Military Intelligence Code, War...
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Typex security measures
In The British Typex cipher machine i added information from report FO 850/171 (mentioned in the book ‘Alan Turing: The Enigma’):Countermeasures against cribbingAs an ENIGMA type device (with a...
View ArticleWrong!
In the German Wikipedia entry on dr Werner Weberthere is a mistake.During WWII Weber worked at OKW/Chi (Oberkommando der Wehrmacht/Chiffrier Abteilung – Codebreaking department of the Supreme Command...
View ArticleSRH-368 ‘Evaluation of the Role of Decryption Intelligence in the Operational...
The very interesting Special Research History SRH-368‘Evaluation of the Role of Decryption Intelligence in the Operational Phase of the Battle of the Atlantic, U.S. Navy OEG Report #68’ is available...
View ArticleWhat happened to my FOIA requests? Progress report
When I started researching WWII cryptologic history I not only copied stuff from the archives but I also requested a lot of material from the NSA’s FOIA office.Although I have received some interesting...
View ArticleCzechoslovak not Czech – my mistake…
I changed the title of my essay Svetova Revoluce and the codes of the Czech resistance into Svetova Revoluce and the codes of the Czechoslovak resistance.
View ArticleAnother victory!
In my recent essay on The ciphers of Czechoslovakia’s government in exile I mentioned a report titled ‘Dopady lúštenia šifrovacieho systému čs. londýnskeho MNO z rokov 1940-1945 na domáci odboj’.This...
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Update
1). In Soviet codebreakers of WWII i added the following paragraph under Enigma:On the contrary the recent article ‘О ВКЛАДЕ СОВЕТСКИХ КРИПТОГРАФОВ В ПОБЕДУ ПОД МОСКВОЙ’, says that in late 1942 the...
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