Two researchers have introduced new techniques for breaking Enigma messages. Using these techniques they have deciphered hitherto unsolved Enigma cryptograms from World War II.
A Mexican astronomer claims to have found the representation of a solar eclipse in the Voynich manuscript. Is this a serious theory or yet another nonsense?
After 20 years in the IT security business, I have created a comic strip based on my experiences. Here are episodes 8 to 10.
Charles Dellschau (1830-1923) was a US outsider artist, who left behind fascinating paintings. Some of these contain encrypted texts.
Tengri 137 is the name of a mystery game, in the center of which is an encrypted book. The last seven pages of this book still wait to be deciphered.
Within a few hours, blog reader Norbert Bierman solved the Reihenschieber challenge I introduced last Monday. His work shows that I used this device in a wrong way.
For the second time in a few months, an encrypted bottle post has been found in the river Alster in Hamburg. Can a reader decipher these mysterious messages? Can we find out who is behind these bottle posts?
The Reihenschieber was a simple encryption device used by the Germans in the Cold War. I built a model of it with Lego bricks. Can you solve an encrypted text I produced with it?
The greatest European crypto history event ever will take place in May 2017. So, save the date, consider handing in a paper, and come to Bratislava!
Blog reader Tony Gaffney has provided me a strange drawing from a British archive. Does it code a text? Is it a cipher tool? Any help from my readers is welcome.
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