Communications of the ACM
Worm Can Deal Double Blow to Nuclear Program
The German software engineer who in September was the first to report that a computer worm was apparently designed to sabotage targets in Iran said Friday that the program contained two separate "digital warheads."
The malicious program, known as Stuxnet, is designed to disable both Iranian centrifuges used to enrich uranium and steam turbines at the Bushehr nuclear power plant, which is scheduled to begin operation next year, said the engineer, Ralph Langner, an industrial control systems specialist based in Hamburg, Germany.
His analysis adds further detail to a report by researchers at the Symantec Corporation, an American computer security company, which concluded that the software code was intended to induce fluctuations in the rotational speed of motors, by taking over a power device known as a frequency converter.
From The New York Times
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