This Unbreakable CIA Cipher Fooled the World for 37 Years. Then Two People Accidentally Solved It.

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

This CIA code went unsolved for 35 years. An amateur discovered the answer in plain sight

For 35 years, cryptographers have tried to crack the final hidden code in the imposing copper sculpture in the courtyard of ...