An analysis of the contents of a laptop computer belonging to al-Qaeda obtained by US forces in Afghanistan in January 2002 shows that the organization may be plotting attacks on the US infrastructure by seizing control of the computer systems used to run power plants, dams, or subways. The laptop was used to visit a site that offers a “Sabotage Handbook” for would-be hackers. Other visited sites are devoted to SCADA software (Systems Control And Data Acquisition), which have largely replaced manual controls to operate plants and machinery. The Washington Post reports that Al-Qaeda detainees interrogated at Guantanamo have revealed plans to use such tools although details are not available. The information obtained is strikingly reminiscent of a recent case of electronic intrusion (see Summer 2001). [Washington Post, 6/27/2002; PBS Frontline, 3/18/2003; Washington Post, 3/11/2005]