At Fort Meade, a dozen senior military, government, and intelligence leaders sat listening to McGurk as he described what his team had found, but the question of whether the United States was behind the attack never came up. They asked McGurk if Stuxnet was directed against US control systems and how many US systems were vulnerable to the malicious code.24 They were also curious to know if McGurk’s team could tell who the intended target was. And finally they asked if there was anything in the code that gave away its source. McGurk told them no, there were no clues revealing who was behind the
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