1. Introduction to Software Security

“... any program, no matter how innocuous it seems, can harbor security holes.... We thus have a firm belief that everything is guilty until proven innocent.”

—WILLIAM CHESWICK AND STEVE BELLOVINFIREWALLS AND INTERNET SECURITY

Computer security is an important topic. As e-commerce blossoms, and the Internet works its way into every nook and cranny of our lives, security and privacy come to play an essential role. Computer security is moving beyond the realm of the technical elite, and is beginning to have a real impact on our everyday lives.

It is no big surprise, then, that security seems to be popping up everywhere, from headline news to TV talk shows. Because the general public doesn’t know very much about ...

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