_____, probably the most notorious known act of cyberwarfare effort to date (one expert called it "the most sophisticated worm ever created"), is suspected to have been launched by either U.S. or Israeli intelligence (or both), and it infiltrated Iranian nuclear facilities and reprogrammed the industrial control software operating hundreds of uranium-enriching centrifuges.

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The Answer of _____, probably the most notorious known act of cyberwarfare effort to date (one expert called it "the most sophisticated worm ever created"), is suspected to have been launched by either U.S. or Israeli intelligence (or both), and it infiltrated Iranian nuclear facilities and reprogrammed the industrial control software operating hundreds of uranium-enriching centrifuges.

_____, Probably the Most Notorious Known Act of Cyberwarfare Effort