Few details on the reported attack are available, except that it appears to have been directed at specific computer systems within the country. "Certain characteristics about the Stars worm have been identified, including that it is compatible with the (targeted) system," said Brigadier General Gholam-Reza Jalali, director of Iran's Passive Defense Organization, in a

Iran has been attempting to shore up its cyberdefenses since it was hit by the Stuxnet worm last year. Stuxnet is widely believed to have been written in order to sabotage the country's Natanz nuclear facility. Thought to be one of the most sophisticated cyber-attacks ever written, Stuxnet seeks out and sabotages specific industrial systems by making them operate in an unsafe way.

Just last week , the company whose industrial systems were targeted by Stuxnet, saying that the German company should "explain why and how it provided the enemies with the information about the codes of the SCADA software and prepared the ground for a cyber attack against us."