ChatGPT is a powerful AI ally — especially as a homework helper — but it’s also a fun diversion. You can chat about politics, ask it to tell you a few jokes, and even shoot the breeze in casual ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. MYSTERY WIRE — The United States Federal ...

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 ...

SAN JOSE — There were plenty of “aha!” breakthroughs on Sunday at an unassuming office space on South 1st Street, where on Sunday Neha Kapadia became the family pack leader as they valiantly tried to ...

The expert cryptanalyst and the Sunday-puzzle expert alike rely on the fact that letters have their own personalities. As David Kahn writes: “To the casual observer, they may look as alike as troops ...

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 ...