UK promo

This is the UK promo for the upcoming Zodiac Killer documentary on the History Channel: Cracking the code of one of America's most notorious unknown killers…#Zodiac coming soon. pic.twitter.com/0vqIYRNZ51 — HISTORY UK (@HISTORYUK) October 28, 2017 It airs in the…

History Channel: The Hunt for the Zodiac Killer

A new documentary about the Zodiac Killer is airing on the History Channel starting November 14th: History Premieres Limited Series THE HUNT FOR THE ZODIAC KILLER, 11/14 Premiering on Tuesday, November 14 at 10PM ET/PT, this five-part limited series, features…

Criminology

Check out “Criminology”, a fantastic podcast about the Zodiac Killer. I’m honored to be featured in Episode 11, in which we dissect the ciphers in more detail: http://criminology.libsyn.com/ep11-zodiac-ciphers-conversation Thanks, Morf and Mike Ferguson for inviting me to be a part…

Criminal codes and ciphers

A friend of mine teaches a Network Security course at a local community college and he invited me to give a talk about criminal codes and ciphers. Here is the video of the talk: Topics include the Unabomber, BTK Killer,…

Hands on Z408

Tom Voigt managed to gain access to the evidence room (presumably at SFPD) to have a closer look one of the three parts of the original Z408 cipher: He says that inspecting the back of the paper reveals Zodiac used…

2017 Symposium on Cryptologic History

Good news: My presentation proposal for this year’s crypto symposium was accepted! Title: The Unsolved Zodiac 340 Cipher: Features or Phantoms? Abstract: The Zodiac Killer’s first cipher was a simple substitution cipher that was quickly solved by amateur codebreakers. But…

Ciphers that resemble Zodiac’s 340-character cryptogram

I believe the best way to keep attacking the Zodiac’s 340-character cipher is to create more test ciphers that share many of its features. If we can easily crack test ciphers under many different schemes, and the Zodiac 340 still…

The Zodiac Ciphers – What do we know, and when do we stop trying to solve them?

Here is a video of my talk from the 2015 Cryptologic History Symposium held at the Johns Hopkins University Applied Physics Lab: I had limited time for the talk, so I recorded a new bonus section at the end to…

Crypto Symposium slides

Conference goers, thanks for attending my talk. Here are the slides: https://drive.google.com/file/d/0Bx2ZxPLdifaodG42enNZNmRCRXM/view?usp=sharing (slideshare link) I will work to post a video of the talk soon. So far the conference is filled with many interesting topics. Here’s the agenda if anyone’s…

Zodiac Pattern Drawer

UPDATE, Feb 7, 2016: The Zodiac Pattern Drawer site at sbabaker.com went down, so I attempted to mirror the tool here: http://zodiackillerciphers.com/zodiac-pattern-drawer/ Computer science professor Ryan Garlick at the University of North Texas has been enlisting his students to try…