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 ...

FORT HUACHUCA, Ariz. -- When Ralph Van Deman established the War Department's intelligence organization shortly after the United States entered World War I, he was faced with the daunting task of ...

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 coded message from the notorious Zodiac Killer appears finally to have been cracked, more than 50 years after the string of murders began in Northern California. Last week, the individuals brought ...