The cipher controversy is back. The Intercept, an American media outlet known for unearthing secret documents, has claimed to have got hold of the text of the cipher that was at the centre of Imran ...

“A man is crazy who writes a secret unless he conceals it from the crowd,” wrote 13th-century philosopher Roger Bacon. Since ancient times, politicians, military leaders and even lovers have used ...

This brief message, which former NASA administrator George Low named ‘The Martian Cipher’, was intercepted in 1969. It took the space agency almost 50 years to decode it. This deciphering is arguably ...

By working this out and filling in the letters, some will form obvious words with letters missing, allowing the codebreaker ...

Astra rebuilt the Germans’ secret letter grid, then found a date error historians can’t explain.

Consider for a moment the possibility that the skyjacker known as D.B. Cooper survived his perilous, 10,000-foot-high leap from a Boeing 727 and escaped into the rainy, wind-whipped night. He'd surely ...