Looks like an interesting segment on 60 Minutes tomorrow night, about the U.S. power grid's and other vital systems' vulnerability to cyber attack.

http://www.cbsnews.com/stories/2009/11/06/60minutes/main5555565.shtml

The revelation is part of a Steve Kroft investigation into how computers and the Internet can be used as weapons to be broadcast on 60 MINUTES Sunday, Nov. 8 (7:00-8:00 PM, ET/PT) on the CBS Television Network.

Former Chief of U.S. National Intelligence Retired Adm. Mike McConnell believes it could happen in America. “If I were an attacker and wanted to do strategic damage to the United States, I would either take the cold of winter or the heat of summer,” he tells Kroft. “I would probably sack electric power on the U.S. East Coast, maybe the West Coast and attempt to cause a cascading effect.” If hackers did attack the U.S. power grid, “The United States is not prepared for such an attack.” says McConnell.