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Definition: Stuxnet

A worm (virus) that was designed to attack Siemens programmable logic controllers (see PLC) and Windows-based industrial software. First identified in 2009, Stuxnet infections were found in Iran, Indonesia, India and other countries with an estimated 100,000 computers infected. Most widely reported was Iran's nuclear generation program, which was damaged when Stuxnet caused some of its centrifuges to run too fast. See Flame virus, worm and SCADA attack.