Book: Security Engineering

One of my favorite security books is "Security Engineering: A Guide to Building Dependable Distributed Systems." Ross Anderson, a professor at Cambridge, wrote the book and when first published in 2001, it instantly became a must have for anyone in the computer security community. Although the book focuses on a variety of technical topics it is very readable and gets you to think more in general about the process of security. Ross's publisher just allowed him to post the entire book online for free (it's also still available in print). Highly recommended if you want to go beyond the standard NGO security readings and get a better understanding of security in technology as well as how to approach it.