You could do worse than to confuse the meanings of "code" and "cipher"—even cryptographers sometime use the terms as though they had the same meaning. There is, however, a definite distinction between ...

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.

For 51 years, one of the Zodiac Killer’s puzzling codes he sent in letters to newspapers in the late 1960s and early 1970s has confounded the cryptography community, law enforcement and curious ...

How does a cipher and code, used by a failed politician, dropped into the middle of a trial for treason in 1807, involving then-president Thomas Jefferson and Chief Justice John Marshall, lead to a ...

SAN FRANCISCO -- Experts have solved the code in the "340 Cipher" sent to the San Francisco Chronicle in 1969 by the Zodiac Killer, the elusive figure who terrorized California's Bay Area decades ago ...