A number of computers in Iran has experienced a number of malicious worm attempts to steal information from industrial control systems. According to data compiled by Symantec, nearly 60 percent of all systems infected by the worm is located in Iran. In addition, Indonesia and India also have been hit by malicious software, known as Stuxnet.
"Seeing the date on which the digital signature generated by the worm, malicious software may have been circulating since January," said Elias Levy, senior technical director of Symantec Security Response. Stuxnet discovered last month by VirusBlokAda, an antivirus company based in Belarus. Stuxnet found in the system software on the device customers in Iran.
Worm find users Siemens SCADA (supervisory control and data acquisition) management system, used in large industrial and utility plants, and tried to upload to the Internet industry secrets. Siemens will not say how many customers have been infected in Iran, but this time two German companies have been infected by the virus. A free virus scanner posted by Siemens earlier this week has been downloaded 1,500 times, "added Elias.