Fermat's Enigma: The Epic Quest to Solve the World's Greatest Mathematical Problem
Cryptanalysis: A Study of Ciphers and Their Solution
Big Bang: The Origin of the Universe
The Codebreakers: The Comprehensive History of Secret Communication from Ancient Times to the Internet
The Code Book: How to Make It, Break It, Hack It, Crack It
The Code Book: The Secrets Behind Codebreaking
Top Secret: A Handbook of Codes, Ciphers and Secret Writing
Blue Team Field Manual (BTFM) (RTFM)
The Cuckoo's Egg: Tracking a Spy Through the Maze of Computer Espionage