Until now, a 250-year-old encoded text titled the Copiale Cipher baffled cryptographers and historians with bizarre symbols and seemingly random letters. Computer scientist Kevin Knight and two ...

More than 50 years after the so-called Zodiac Killer first began terrorizing the streets of Northern California, a code-breaking team is believed to have finally cracked one of the killer’s ...

Amateur and professional cryptographers, including those at the FBI, had been trying to decode the infamous serial killer's message to the media for decades.

The Playfair cipher is an incredibLe code system that is both difficult to decrypt without a computer and easily solvable by hand. Here's how to solve it.

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 ...