Book excerpt: Prepare for the CEH certification exam with this official review guide and learn how to identify security risks to networks and computers. This easy-to-use guide is organized by exam objectives for quick review so you’ll be able to get the serious preparation you need for the challenging Certified Ethical Hacker certification exam 312-50. As the only review guide officially endorsed by EC-Council, this concise book covers all of the exam objectives and includes a CD with a host of additional study tools.