Zodiac’s Z340 message, typos included. First spotted this week by 404 Media, the 39-page paper (accompanied by 23 pages of source materials) offers the fascinating and complex history behind Z340.

On November 8, 1969, just a few weeks after he committed what was likely his fifth and final murder, the Zodiac Killer sent a cipher to the San Francisco Chronicle. Consisting of just 340 ...

In the late 1960s, a serial killer self-identifying as “the Zodiac” killed at least five people in Northern California and claimed to have murdered more. In November 1969, the Zodiac Killer sent a ...

Back in 1969, before Z340 was written, a hoax caller rang a TV show pretending to be the Zodiac, saying that he was scared of getting sent to “the gas chamber” for his crimes – and it seems ...

"On December 5, 2020, the FBI received the solution to a cipher popularly known as Z340 from a cryptologic researcher and independently verified the decryption," said the FBI in an emailed statement.

TThe "Zodiac Killer," a shadowy serial assassin who terrorized Northern California ... The team says it may have solved a significant portion of the diabolically complicated Zodiac code, Z340, ...

On tonight's chilling episode of The Hunt for the Zodiac Killer, ... The Z340 code is still an unsolved cipher. It is a mash-up of ancient and modern symbology that Sal, ...