How does one crack the world’s most famous code? The breakthroughs on Kryptos provide a guided tour through the cat and mouse ...

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 ...

What better way to recruit potential code breakers than to advertise in cipher? That's what the NSA did Monday morning with this mysterious tweet: According to The Washington Post, if you're good at ...

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 can ...

According to The Washington Post, if you're good at breaking substitution ciphers, this is what you'd come up with: "want to know what it takes to work at nsa? check back each monday as we explore ...