Windows worm crashes nuclear plant

According to this article, the Slammer worm crashed a safety monitoring system in an Ohio nuclear power plant last January. The plant was, fortunately, offline. This leaves one to wonder whether the recent Blaster worm had anything to do with last week's massive power outage. It also leaves one to wonder what in blazes they were thinking when they decided to base the monitoring system on Windows.

According to the article,

The Slammer worm entered the Davis-Besse plant through a circuitous route. It began by penetrating the unsecured network of an unnamed Davis-Besse contractor, then squirmed through a T1 line bridging that network and Davis-Besse's corporate network. The T1 line, investigators later found, was one of multiple ingresses into Davis-Besse's business network that completely bypassed the plant's firewall, which was programmed to block the port Slammer used to spread.