Computer Virus May Target Iran Nuclear Plant

"A piece of highly sophisticated malicious software that has infected an unknown number of power plants, pipelines and factories over the past year is the first program designed to cause serious damage in the physical world, security experts are warning. The Stuxnet computer worm spreads through previously unknown holes in Microsoft’s [MSFT  24.775    0.345  (+1.41%)   ] Windows operating system and then looks for a type of software made by Siemens [SI  106.96    5.58  (+5.5%)   ] and used to control industrial components, including valves and brakes...." The Stuxnet computer worm