I hereby invite all my readers from Germany, France, UK and the Benelux region to join me at the “Top Secret!” exhibition in Mons, Belgium, next Saturday.
A store in Peekskill, New York, has an interesting encryption machine on sale. Can my readers help to find information about the background of this device?
The gravestone of John Laird McCaffrey in Montreal, Canada, bears a hidden message. Last week I had the chance to go on site and take a look at it.
Thanks to blog reader Christian Baumann, a completely new version of my Cryptologic Travel Guide is now avaible. Almost 100 museums, libraries, graves and other sights with a relationship to cryptology are now displayed on an interactive world map.
The gravestone of William and Elizebeth Friedman in Washington, DC, bears a hidden message. A few days ago I had the chance to go on site and take a look at it. Here’s my report, including a video that shows Elonka Dunin explaining the code.
CRAQUEREZ, SAUKNOTEN, INCLEMENTE – these are three words from an encrypted message sent from Manila to Washington in 1898. Can a reader break this cryptogram?
The biannual Symposium on Cryptologic History organized by the NSA is the most important crypto history event in the world. Here’s my report on the 2017 edition.
Two years ago an encrypted bottle post was found in Kaliningrad, Russia. Can a reader break this cryptogram?
William and Elizebeth Friedman, two of history’s greatest codebreakers, published a book dubunking the idea of hidden codes in the works of Shakespeare. However, the book itself contains a code. Can you find it?
Cardsharping with steganography is a popular motive on classical paintings. Here are five examples.
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