The latest news on the nefarious Stuxnet worm may be giving non-Iranian utilities a sigh of relief — but don’t let bad news for Iran give a false sense of security. Iranian President Mahmoud Ahmadinejad confirmed Monday that some of the country’s uranium enrichment centrifuges had encountered “problems” after unspecified software was installed to operate them. While he didn’t offer more details, the scenario sounds like an attack by Stuxnet, the still-untraced virus that infects Siemens SCADA (supervisory control and data acquisition) via memory sticks and Microsoft Windows-equipped PCs. That’s according to cybersecurity teams that have been studying it for months now (pdf), and fears have been mounting that Stuxnet-like viruses could target other power industry systems in other countries. Symantec warned Congress earlier this month that the sophistication of Stuxnet represented a brand-new type of threat for power grids, whether “smart” or not — antivirus firm Enet claims that an unnamed San Diego utility has been infected with the worm.