Security Expert: US 'Leading Force' Behind Stuxnet

One year ago, German cyber security expert Ralph Langner announced he had found a computer worm designed to sabotage a nuclear facility in Iran. It's called Stuxnet, and it was the most sophisticated worm Langner had ever seen.
In the year since, Stuxnet has been analyzed as a cyber super weapon, one so dangerous it might even harm those who created it.

In the summer of 2010, Langner and his partners went to work analyzing a malicious software program that was turning up in some equipment. Langner Communications is a small firm in Hamburg, Germany, but Langner and the two engineers with whom he works know a lot about industrial control systems. What they found in Stuxnet left them flabbergasted.

"I'm in this business for 20 years, and what we saw in the lab when analyzing Stuxnet was far beyond everything we had ever imagined," Langner says.

See more at: http://www.npr.org/2011/09/26/140789306/security-expert-u-s-leading-force-behind-stuxnet