Chapters: Storm Botnet, Srizbi Botnet, Zeus, Operation: Bot Roast, Kraken Botnet, Mega-D Botnet, Torpig, Akbot, Bot Herder. Source: Wikipedia. Pages: 52. Not illustrated. Free updates online. Purchase includes a free trial membership in the publisher's book club where you can select from more than a million books without charge. Excerpt: The Storm botnet or Storm worm botnet (not to be confused with StormBot, a TCL script that is not malicious) is a remotely controlled network of “zombie” computers (or “botnet”) that has been linked by the Storm Worm, a Trojan horse spread through e-mail spam. Some have estimated that by September 2007 the Storm botnet was running on anywhere from 1 million to 50 million computer systems. Other sources have placed the size of the botnet to be around 250,000 to 1 million compromised systems. More conservatively, one network security analyst claims to have developed software that has crawled the botnet and estimates that it controls 160,000 infected computers. The Storm botnet was first identified around January 2007, with the Storm worm at one point accounting for 8% of all malware on Microsoft Windows computers. The Storm botnet has been used in a variety of criminal activities. Its controllers and the authors of the Storm Worm have not yet been identified. The Storm botnet has displayed defensive behaviors that indicated that its controllers were actively protecting the botnet against attempts at tracking and disabling it. The botnet has specifically attacked the online operations of some security vendors and researchers who attempted to investigate the botnet. Security expert Joe Stewart revealed that in late 2007, the operators of the botnet began to further decentralize their operations, in possible plans to sell portions of the Storm botnet to other operators.