A French amateur codebreaker claims to have done what police and other investigators could not: Solve the remaining Zodiac Killer ciphers, including one that supposedly reveals the California killer’s ...

The story of Kryptos and the cryptanalyst who spent decades trying to solve the CIA sculpture greatest mystery.

A coded letter mailed to a San Francisco newspaper by the Zodiac serial killer in 1969 has been deciphered by a team of amateur sleuths from the United States, Australia and Belgium, the San Francisco ...

The United States National Security Agency — the country’s premier signals intelligence organisation — recently declassified a Cold War-era document about code-breaking. The 1977 book, written by ...

The world has its fair share of serial killers, with some who have not been caught and are probably running in the wild freely with their real identities still unknown--such as the case of the Zodiac ...

The United States National Security Agency—the country's premier signals intelligence organization—recently declassified a Cold War-era document about code-breaking. The first two parts of the trilogy ...