Stuxnet is a highly sophisticated computer worm that was first discovered in 2010. It is believed to have been created by U.S. and Israeli intelligence agencies to sabotage Iran's nuclear program. The worm specifically targets SCADA (Supervisory Control and Data Acquisition) systems, which are used to control industrial processes. Stuxnet's most notable achievement was its ability to cause physical damage to Iran's nuclear centrifuges by altering their rotational speeds while displaying normal operation statuses to system monitors, thus delaying detection.