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 ...

A group of private citizens say they've broken an encoded message sent by the so-called "Zodiac Killer" to a San Francisco newspaper more than five decades ago.

The National Security Agency sent out a tweet that looked like gibberish. It turned out to be a job advertisement disguised in simple cipher.

Code- and cipher-breaking have been in operation for centuries. However, cryptanalysis – the art of deciphering encoded messages – took on a new importance during WW2 as British boffins ...

Code-breakers have cracked a 340-character cipher 51 years after it was purportedly sent to the San Francisco Chronicle by the so-called Zodiac Killer, the FBI has confirmed.

But the Bay Area killer’s 340-character cipher mailed to the San Francisco Chronicle has been cracked by an international team of code-breakers.

UK intelligence agency GCHQ has celebrated its centenary year by releasing emulators for famous code cipher and code breakers used in World War II. Last week, GCHQ said on Twitter that the public ...

How to Cipher Like a Soviet See if you can figure out how the American code-breakers unraveled the complexities of the Russian codebook ...

Singh adds some spice to his book with a special offer for would-be code breakers. At the end of the book, he sets up the cipher challenge with 10 levels of code and asks you to solve them.