The 2010 Stuxnet attack against Iran's Natanz facility caused physical degradation of equipment by manipulating which specific process?
- A.The rotational speed of uranium enrichment centrifuges via reprogrammed PLC logic
- B.The cooling water flow into a nuclear reactor core
- C.The voltage regulation of the national power transmission grid
- D.The chemical dosing pumps at a municipal water treatment plant
Why A is correct
Stuxnet altered the operating frequencies of variable-frequency drives controlling centrifuge motors, spinning them outside safe ranges to damage them while feeding falsified normal readings to operators. It is widely regarded as the first malware purpose-built to cause physical destruction of industrial equipment.
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