The Unabomber's Code
This is interesting. Ted Kaczynski wrote in code:
In a small journal written in code, he documented his thoughts about the crimes he was committing. That code was so difficult, a source says the CIA couldn’t crack it—until someone found the key itself among other documents, and then translated it.
Look at the photo. It was a manual, pencil-and-paper cipher. Does anyone know the details of the algorithm?