CodebreakingThe best book on codebreaking I have read, SIR DERMOT TURING Brings back the joy I felt when I first read about these things as a kid, PHIL ZIMMERMANN This is at last the single book on codebreaking that you must have. If you are not yet addicted to cryptography, this book will get you addicted. Read, enjoy, and test yourself on history's great still unbroken messages! JARED DIAMOND is the Pulitzer Prize winning author of Guns, Germs, and Steel;