Iranian President Mahmoud Ahmadinejad announced that a recent cyber attack targeting Iran’s nuclear program was successful and caused a short outage and one of the country’s nuclear facilities.

The Stuxnet worm appears to have temporarily halted Iran’s uranium enrichment program, but officials claim the attack only had a limited effect. It appears that the Natanz enrichment plant was forced to halt production for a day earlier this month.

"They succeeded in creating problems for a limited number of our centrifuges with the software they had installed in electronic parts… Our specialists stopped that and they will not be able to do it again," said Ahmadinejad.

Security experts point to the complexity of the Stuxnet code as proof that it was created by a western “nation state” rather than a group of geeks.

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