A single leaked hint exposed the CIA’s most puzzling code. But dozens of the world’s toughest ciphers are still waiting to be solved.

An original World War II German Enigma machine, one of the most important cipher devices in history, will be offered in Rock ...

The 35-year-old saga of Kryptos, an enigmatic sculpture containing four encrypted messages outside the CIA headquarters, just ...

The imprisoned Mary, Queen of Scots used sophisticated ciphers as she conspired to overthrow her cousin, Elizabeth I. Long thought lost, the letters were hiding in plain sight. A portrait of a ...

Meghan Markle is being accused of using her royal status to promote her lifestyle business, As Ever. Keep reading for the ...