Experts say the Stuxnetrnworm should serve as a wake-up call that cyberwarfare against critical infrastructure systems is a reality. "Up until now, the discussions have been scenario-based," said Dave Marcus, director of security research at McAfee Avert Labs. Here is an actual, real-world example. It is not conceptual anymore." German security researcher Ralph Langner said the complexity of the attack and the use of four zero-day flaws indicates it was the work of a well-resourced team with critical infrastructure control systems expertise.
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