"The Unofficial Guide to Ethical Hacking, Second Edition" is a must-read for any reader interested in learning how a computer system is hacked and how to protect from future attacks. Written for the beginner-level computer user the book contains 70% updated material from the best-selling first edition. All aspects of computer security, including the nature of file encryptions, firewalls, and viruses, are explored in an easy-to-understand and approachable manner. Learn how to recognize the unethical hacker. Clear, step-by-step instructions detail how to perform the various hacking techniques discussed and a companion web site features scripts, programming code, tools, and more.