Stutnex may be the first publically outed black ops virus, designed to torque up Iran’s enrichment centrifuges – literally.
Clues Suggest Stuxnet Virus Was Built for Subtle Nuclear Sabotage | Threat Level | Wired.com
Symantec still has not determined what specific facility or type of facility Stuxnet targeted, but the new information lends weight to speculation that Stuxnet was targeting the Bushehr or Natanz nuclear facilities in Iran as a means to sabotage Iran’s nascent nuclear program.
According to Symantec, Stuxnet targets specific frequency converter drives — power supplies that are used to control the speed of a device, such as a motor. The malware intercepts commands sent to the drives from the Siemens SCADA software, and replaces them with malicious commands to control the speed of a device, varying it wildly, but intermittently.