Computers in Iran have been hardest hit by a dangerous computer worm that tries to steal information from industrial control systems.
According to data compiled by Symantec, nearly 60 percent of all systems infected by the worm are located in Iran. Indonesia and India have also been hard-hit by the malicious software, known as Stuxnet.
Looking at the dates on digital signatures generated by the worm, the malicious software may have been in circulation since as long ago as January, said Elias Levy, senior technical director with Symantec Security Response.
Stuxnet was discovered last month by VirusBlokAda, a Belarus-based antivirus company that said it found the software on a system belonging to an Iranian customer. The worm seeks out Siemens SCADA (supervisory control and data acquisition) management systems, used in large manufacturing and utility plants, and tries to upload industrial secrets to the Internet.
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