Erba-Murder-bar

In 2006 a couple from Erba, Italy, murdered four neighbors. An encrypted letter from this criminal case is still waiting to be solved.

Fringe-Code-2-bar

“Fringe”, a successful US TV series, contains a hidden code. It has been solved by fans of the series.

Zodiac-Awakening-bar

The Zodiac Killer has hit the cinemas again. In a new film titled “Awakening the Zodiac” the code of the killer is broken.

Revel-Compact-bar

A reader from the Philippines has asked me for help. Can somebody solve the crypto puzzle he is currently working on?

SS-message-bar

In 1944 a member of Hitler’s paramilitary organization SS sent an encrypted radio message to a recipient named Lippert. The cleartext is unknown.

Borges-Book-bar

Bruno Borges, a Brazilian student who has mysteriously vanished from his home, left behind several encrypted books. A publishing company has now published one of them. It has entered the Brazilian bestseller list.

Dorabella-bar

The Dorabella Cipher is one of the most popular crypto mysteries in the world. 120 years after its creation still nobody has found the solution.

CD-57-Variant-BSI-bar

A few years ago I took pictures of a rare encryption device from the Cold War era. Can a reader help to find out more about it?