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Tehran

Stuxnet targeted centrifuges: Experts analyzing the computer worm Stuxnet have found new evidence that it was designed specifically to cripple Iran’s nuclear program. Analysts from Symantec Corp. said the worm was calibrated to attack specific electrical converters used in Iran’s nuclear centrifuges. The converters direct motors to alternately surge and slow down until the centrifuge explodes, damaging the machines. Another expert who has studied the worm, German engineer Ralph Langner, said Stuxnet contained a second code designed to disable steam turbines at Iran’s Bushehr nuclear power plant. The worm’s two tasks were closely related, “deployed in combination as an all-out cyberstrike against the Iranian nuclear program,” Langner said. No one has claimed responsibility for the malware, but some analysts suspect Israeli involvement.

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