Iran has denied recent reports that a malware attack hit two of its nuclear facilities and forced workstations to blast AC/DC in the middle of the night.

"'Who seriously believes such a story?' said chief of Iran's Atomic Energy Organisation (AEOI) Fereydoun Abbasi. 'It is baseless and there has never been such a thing,'" writes International Business Times' Gianluca Mezzofiore. "On the sidelines of a government meeting, he said that reports of the cyber-attack were 'incorrect.'"

"A new worm targeted Iran’s nuclear program, closing down the 'automation network' at the Natanz and Fordo facilities, the F-Secure Security Labs website said this month, citing an e-mail it said was sent by a scientist inside Iran’s Atomic Energy Organization," write Bloomberg's Ladane Nasseri and Yeganeh Salehi. "The virus also prompted several computers at the sites to play the song 'Thunderstruck' by AC/DC at full volume in the middle of the night, according to the e-mail, part of which is published in English on the website."

"The computer systems of the AEOI and related facilities, as well as some ministries, have previously been attacked by computer worms," Haaretz reports. "Iran has confirmed some of the cyber attacks, but played down any damage. In 2010 some 30,000 Iranian computers were infected with the sophisticated Stuxnet worm, which appeared to target computers connected to uranium-enriching centrifuges at nuclear sites. Computer experts have speculated that the worm was developed by either Israel or the United States to derail Iran's disputed nuclear programs."