Computerworld reports that Iranian officials have confirmed that the Stuxnet worm has infected at least 30,000 Windows PCs in the country.
Symanetc's research shows that nearly 60 percent of the computers infected with Stuxnet are in Iran. It's not yet clear how or why the worm was created. Although, many security experts believe that Stuxnet was built to specifically target Iran's Bushehr nuclear reactor.
According to The Washington Post, Symantec's Liam O Murchu believes creation of the malicious code required a team of as many as five to 10 highly educated and well-funded hackers. O Murchu says "it was either a well-funded private entity" or it "was a government agency or state sponsored project."