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 ...

Bottom line: An international team of cryptographers have managed to crack a coded message from the Zodiac Killer that has remained a mystery for more than five decades. As exciting as it is that the ...

U.S. fighting forces during World War II were greatly aided by the government’s ability to crack enemy codes. But that ability has been largely defeated by much-improved encryption technology, and ...

In cryptography, the data in a message is encoded by multiplying it with a certain number. To decode the message the receiver must apply a second number, related to the first, called a key. But in ...

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 ...

American code breakers have given the United States an edge in every conflict in American history. But with uncrackable encryption available for your cell phone and computer, have U.S. code warriors ...