This book devotes a full chapter to each type of malware-viruses, worms, malicious code delivered through Web browsers and e-mail clients, backdoors, Trojan horses, user-level RootKits, and kernel-level manipulation. You'll learn about the characteristics and methods of attack, evolutionary trends, and how to defend against each type of attack. Real-world examples of malware attacks help you translate thought into action, and a special defender's toolbox chapter shows how to build your own inexpensive code analysis lab to investigate new malware specimens on your own.