How to tell your loved one where you are, if you are a soldier and not allowed to mention your whereabouts in your letters? A German soldier in the Second World War came up with a steganographic technique.

A hidden message has been found on a paved square in Steyr, Austria. Now, the creator of this steganogram has to cover the costs for removing it.

A dead man who was found in Australia in 1948 has never been identified. An encrypted (?) text could help solve the mystery. But nobody has been able to decipher it yet.

The animal rights organisation PETA has found interesting ways to protest against animal cruelty.

The lyrics of the song “Encryption D” by techno musician AVTechNO! reads like an encrypted message. Can a reader break it?

In 1924, British mountaineers George Mallory and Andrew Irvine died trying to be the first to climb Mount Everest. An encrypted telegram reported the drama to their homeland. A blog reader identified the codebook that was used, but there is still one word, the meaning of which is unknown.