Serial killer »Zodiac«: secret message decrypted after 51 years



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A team of crypto experts claims to have successfully deciphered a message from the notorious and yet unknown American serial killer “Zodiac-Killer”. As the three specialists announced on Friday, they deciphered one of the messages that the murderer had sent to a local newspaper more than 50 years ago.

The “Zodiac Killer” is charged with at least five murders committed in Northern California in the 1960s; he himself claims to have killed 37 people. His identity has not yet been clarified. Internationally, his case is best known for the film “Zodiac: The Killer Trail” by David Fincher with Robert Downey Jr. and Jake Gyllenhaal, in which the failed search for the murderer is reconstructed.

According to the team, the now-decrypted message that the killer had sent to the San Francisco Chronicle newspaper in November 1969 contained no clues to his identity. Rather, it is boasting. According to the “Zodiac-Killer” he wrote among other things: “I hope you have a lot of fun trying to catch me. I am not afraid of the gas chamber, because it will take me to paradise long before because now I have enough slaves to work for me. “

Years of use

In a previous message, the encryption of which was easier to break, the famous killer had used similar phrases: “I like to kill because it is very fun,” he said. Again he was referring to the “slaves” whom he supposedly gathered to serve him in the afterlife.

The decoder team consists of American web designer David Oranchak, Australian mathematician Sam Blake, and Belgian logic expert Jarl Van Eykcke. It took years of work and the use of various computer programs to decipher the message made up of numbers and symbols.

Complex code, also known as “340 cipher” because it contains 340 characters, is read diagonally. When the bottom margin is reached, the reader should continue reading in the opposite top corner. According to experts, this type of encryption is described, among other things, in a US Army manual from the 1950s.

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