In a 1984 video clip by British Heavy Metal band Iron Maiden, several messages consisting of strange symbols can be seen. Can they be decrypted?
A museum in Polotsk, Belarus, is struggling with an encrypted postcard. Can a reader help?
In the Second World War, the Germans used a manual cipher, the “double box”. Here’s a double-box cryptogram for my readers to solve.
Here’s an English postcard from the early 20th century. Can a reader deipher it?
CNN.com, one of the most popular news portals in the world, has published an article about the Kryptos sculpture. And then, there’s a question about Kryptos I would like to ask my readers.
German egyptologist Rainer Hannig recently claimed to have solved the Voynich manuscript. Israeli crypto expert Moshe Rubin is skeptical.
After WW2, German author Arno Schmidt created an encrypted letter addressed to Truman, Stalin, and Churchill. To my knowledge, is has never been deciphered.
Richard Bean has made me aware of an in-depth interview US an art historian did with Jim Sanborn. A transcript of this talk has now been made available online.
Last year, blog readers Richard Bean, Frode Weierud and George Lasry broke a series of ciphertexts from the Biafran War. Now they have published the details in a research paper.
In a Russian online forum, an encrypted book with similarities to the Voynich Manuscript is being discussed. This tome would be a sensational find if it was genuine – but it’s probably not.