“Stuxnet, a sophisticated computer virus created by the United States and Israel, to spy on and attack Iran’s nuclear enrichment facilities in Natanz also infected Chevron ’s network in 2010, shortly after it escaped from its intended target.
Chevron found Stuxnet in its systems after the malware was first reported in July 2010, said Mark Koelmel, general manager of the earth sciences department at Chevron. ‘I don’t think the U.S. government even realized how far it had spread,’ he told CIO Journal. ‘I think the downside of what they did is going to be far worse than what they actually accomplished,’ he said.”
Source: Stuxnet Infected Chevron’s IT Network – The CIO Report – WSJ