Stuxnet was a weapon used to cripple Irans nuclear enrichment process. It is the first Cyber Weapon that we know of. It has changed the rules on how wars will be conducted.
Countdown to Zero Day: Stuxnet and the Launch of the World’s First Digital Weapon, written by WIRED senior staff writer Kim Zetter, tells the story behind Stuxnet’s planning, execution and discovery. In this excerpt from the book, which will be released November 11, Stuxnet has already been at work silently sabotaging centrifuges at the Natanz plant for about a year. An early version of the attack weapon manipulated valves on the centrifuges to increase the pressure inside them and damage the devices as well as the enrichment process. Centrifuges are large cylindrical tubes—connected by pipes in a configuration known as a “cascade”—that spin at supersonic speed to separate isotopes in uranium gas for use in nuclear power plants and weapons. At the time of the attacks, each cascade at Natanz held 164 centrifuges. Uranium gas flows through the pipes into the centrifuges in a series of stages, becoming further “enriched” at each stage of the cascade as isotopes needed for a nuclear reaction are separated from other isotopes and become concentrated in the gas.
Should be a good book… Wired has been all over this since it was detected.