Experts called Stuxnet a 'wake-up call' when it was identified as a cyberweapon. But even as hackers study it, there is scant evidence US utilities are bolstering their defenses against attack.
President Mahmoud Ahmadinejad says that a computer worm incapacitated some centrifuges of the Iran nuclear program. The worm was surely Stuxnet, experts say.
The Stuxnet malware has infiltrated industrial computer systems worldwide. Now, cyber security sleuths say it's a search-and-destroy weapon meant to hit a single target. One expert suggests it may be after Iran's Bushehr nuclear power plant.
Beware the USB memory stick. Infected sticks are the means by which a mystery spyware, dubbed Stuxnet, is penetrating control systems of industrial facilities and utilities around the globe, say cybersecurity experts.