Preface 1 About This Book This book is about computer security—what it is, where it came from, where it’s going, and why we should care about it. It introduces the many different areas of security in clear and simple terms: access controls, worms and viruses, cryptogra- phy, firewalls, network and web security, biometric devices, and more. If you’re at all interested in computer security or if computer security is a part of your job (whether you want it to be or not!), you should find this book useful. I’ve tried to give you the big picture and quite a few helpful details. This book is not a technical reference. I’ve tried to pull together the basics about many different areas of computer security and put that information together compre- hensively. If you need particularly technical information about a specific area of com- puter security (for example, making your specific system
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