Blog reader Magnus Ekhall has created a software that simulates an Enigma breaking device. He has also published a few challenges, one of which is still unsolved.

The Polish city of  Poznań offers a number of interesting Enigma sights. Now, a new one is planned: an Enigma information center. Suggestions from my readers on how this place might look like are highly welcome.

German mathematician Dr. Heinrich Döring was one of the most brilliant codebreakers of the Second World War. Does a reader know what happened to him after 1945?

On Friday the Heinz Nixdorf Museum will broadcast a number of radio messages encrypted with an Enigma. Codebreaking experts in Bletchley Park will try to decipher these cryptograms with WW2 technology. Enigma experts will try the same with computer support.

Two researchers have introduced new techniques for breaking Enigma messages. Using these techniques they have deciphered hitherto unsolved Enigma cryptograms from World War II.

Enigmas are getting more and more expensive. In New York, a four rotor naval Enigma has now sold for almost half a million dollars.

Around 1990 David Kahn, the father of crypto history, met a tall man wearing a suit and glasses. This is documented on a photograph. Does anybody recognize this man?

Swiss army veteran, Max Rüegger operated an Enigma in Korea in the the 1960s. Here’s his intriguing report.

Die Produktion der Enigma war nur dank zahlreicher Arbeitskräfte möglich. Der norwegische Enigma-Experte Frode Weierud forscht derzeit zu diesem interessanten Thema. Vielleicht können ihm Leser dieses Blogs dabei helfen.

Im Zweiten Weltkrieg versagte die deutsche Verschlüsselungstechnik auf der ganzen Linie. Heute weiß man, wie dieses kriegsentscheidende Fiasko zustande kam.