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

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

CIA interrogators threatened an al Qaeda prisoner with a gun and an electric drill to try to scare him into giving up information, according to a long-concealed inspector-general's report due to be ...