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Siemens stated that the worm has not caused any damage to its customers, but the Iran nuclear program, which uses embargoed Siemens equipment procured secretly, has been damaged by Stuxnet. ĭifferent variants of Stuxnet targeted five Iranian organizations, with the probable target widely suspected to be uranium enrichment infrastructure in Iran Symantec noted in August 2010 that 60% of the infected computers worldwide were in Iran.
Simatic step 7 wikipedia software#
Stuxnet infects PLCs by subverting the Step-7 software application that is used to reprogram these devices. The worm initially spreads indiscriminately, but includes a highly specialized malware payload that is designed to target only Siemens supervisory control and data acquisition (SCADA) systems that are configured to control and monitor specific industrial processes. While it is not the first time that hackers have targeted industrial systems, it is the first discovered malware that spies on and subverts industrial systems, and the first to include a programmable logic controller (PLC) rootkit. Stuxnet initially spreads via Microsoft Windows, and targets Siemens industrial control systems. Stuxnet is a computer worm discovered in June 2010 that is believed to have been created by the United States and Israel agencies to attack Iran's nuclear facilities.