I hope it's not a terror attack, but it is not out of the realms of possibility.
http://www.washingtonpost.com/ac2/wp-dyn/A50765-2002Jun26 Most significantly, perhaps, U.S. investigators have found evidence in the logs that mark a browser's path through the Internet that al Qaeda operators spent time on sites that offer software and programming instructions for the digital switches that run power, water, transport and communications grids. In some interrogations, the most recent of which was reported to policymakers last week, al Qaeda prisoners have described intentions, in general terms, to use those tools.
Because the digital controls were not designed with public access in mind, they typically lack even rudimentary security, having fewer safeguards than the purchase of flowers online. Much of the technical information required to penetrate these systems is widely discussed in the public forums of the affected industries, and specialists said the security flaws are well known to potential attackers.
Massoud Amin, a mathematician directing new security efforts in the industry, described the North American power grid as "the most complex machine ever built." At an April 2 conference hosted by the Commerce Department, participants said, government and industry scientists agreed that they have no idea how the grid would respond to a cyber-attack.
What they do know is that "Red Teams" of mock intruders from the Energy Department's four national laboratories have devised what one government document listed as "eight scenarios for SCADA attack on an electrical power grid" -- and all of them work. Eighteen such exercises have been conducted to date against large regional utilities, and Richard A. Clarke, Bush's cyber-security adviser, said the intruders "have always, always succeeded."
Now reporting this this could go *well* into the night....