PGP: Pretty Good Privacy
If you're concerned about the security of personal information on your computer--or in your e-mail--get PGP using this book. Garfinkel's guide to PGP (Pretty Good Privacy) encryption software is a comprehensive guide to secure encryption for everyone and anyone. So much so that even Phil Zimmerman, who created PGP, said he learned new things from this book. But more than that, it takes you behind the scenes into the fascinating history and workings of the great intellectual adventure story of cryptography. This book is a fascinating read as well as a top-notch guide, and is needed now more than ever.