A practical handbook for system administrators, network administrators, and security professionals furnishes detailed information on the latest Internet botnets, covering everything from what botnets are, to how they are used to attack sites and working code to protect a system from them, discussing the dangers of identity theft, financial account information breaches, Spam, and other high-tech dangers, as well as how to detect botnets and the tools available to prevent and alleviate the problem. Original. (Intermediate)