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…
In a statement Friday on his Web site, he described two different attack modules that are designed to run on different industrial controllers made by Siemens, the German industrial equipment maker. “It appears that warhead one and warhead two were deployed in combination as an all-out cyberstrike against the Iranian nuclear program,” he wrote…
When asked about Mr. Langner’s new analysis, Eric Chien of Symantec said the company’s researchers had also seen evidence of a second attack module, but that the module was disabled in the version of Stuxnet they studied.
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