The Voynich manuscript has long been shorthand for the unsolved and the unknowable, a late medieval codex filled with looping ...

A new theory argues the famous Voynich Manuscript, often referred to as “the most mysterious book in the world,” may have ...

King Charles III's royal cipher was unveiled on Monday, Sept. 26, revealing the monogram for the United Kingdom's new monarch. The king's cipher is a monogram consisting of his first name initial, C, ...

A trio of codebreakers has found and deciphered a treasure trove of lost letters written by Mary, Queen of Scots. The 57 secret letters, from Mary Stuart to the French ambassador to England between ...

Researchers have used state-of-the-art machine translation software — and some old-fashioned hunches — to crack the code used by a secret society in Germany three centuries ago. The results shed light ...

A mysterious manuscript dating back to the 15th century could be a type of encrypted message, a new study has suggested. The ...

Sam Blake, an Australian mathematician, first learned of the Zodiac Killer’s unsolved ciphers — a series of encrypted messages — from a documentary in the 1990s. His interest marginally increased in ...