Researchers at Symantec Corp have uncovered a version of the Stuxnet computer virus that was used to attack Iran’s nuclear program in November 2007, two years earlier than previously thought.
Planning for the cyber weapon, the first publicly known example of a virus being used to attack industrial machinery, began at least as early as 2005, according to an 18-page report that the security software company published on Tuesday.
Stuxnet, which is widely believed to have been developed by the United States and Israel, was uncovered in 2010 after it was used to attack a uranium enrichment facility at Natanz, Iran. That facility has been the subject of intense scrutiny by the United States, Israel and allies, who charge that Iran is trying to build a nuclear bomb.
READ ON: Researchers say Stuxnet was deployed against Iran in 2007