CIA: Hackers Shook Up Power Grids

This in last week from Wired Blog:

Earlier this week, the nation's chief spy screeched about of the danger of cyber attacks -- and the need to monitor what everyone does online, in response. Now, the CIA has made an usually public warning about the perils that network strikes can pose. Hackers have tried to extort money from overseas utility companies. At least in one case, the Washington Post reports, the online attackers messed with an electrical grid, disrupting ing power in several cities.

http://blog.wired.com/defense/2008/01/hackers-take-do.html

Very scary indeed. Water systems and nuclear facilities (to name just a few snippets
of US infrastructure) have many computer-absed systems that, if accessed, could be
used for some badness.