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In 1991, an unknown person sent a number of letters to the presenter of the TV show “America’s Most Wanted”. The anonymous writer claimed to have committed 23 crimes. Some of the letters were encrypted in a similar style as the Zodiac Killer messages.

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A few years after the Zodiac murders, an unknown person sent a letter to an address in Albany, NY, claiming that he was the Zodiac Killer and that he intended to start killing again. A few lines of this letter are encrypted. The cleartext is unknown.

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20 years after the last message of the infamous Zodiac Killer an unknown person sent a Zodiac-style postcard to a California newspaper. As far as I know, it has never been deciphered.

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The fifth episode of HISTORY’s Zodiac Killer documentary revealed an alleged solution of the infamous Z340 cryptogram. Does it make sense?

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Four episodes of the Zodiac Killer documentary on HISTORY have aired now. The fourth one ended with Craig Bauer saying that he has broken Z340. Will episode 5 tell us the solution?

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The first episode of the new HISTORY TV series about the Zodiac Killer has aired. It announced the biggest break-through in cryptology in the last 50 years.

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The TV channel HISTORY is launching a series about the Zodiac Killer. Allegedly, a solution to one of the famous cryptograms created by this serial killer will be presented.

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In Florida ist ein verschlüsseltes Schreiben aufgetaucht, das an die Bekennerbriefe des berüchtigten Zodiac-Killers erinnert. Kann jemand die Verschlüsselung knacken?

Zodiac-Lego

Nach dem Voynich-Manuskript sind die verschlüsselten Bekennerschreiben des Zodiac-Killers das zweitbeliebteste Krypto-Rätsel auf meinem Blog. Nachdem ich schon lange nicht mehr auf dieses Thema eingegangen bin, gibt es heute ein Zodiac-Killer-FAQ.

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Letzte Woche hielt ich einen Vortrag beim NSA Cryptologic History Symposium. Dabei wagte ich ein Experiment: Ich stellte kryptologisch interessante Kriminalfälle mit Hilfe von Lego-Steinen dar.