ago in the firm’s computers, although no damage was done. The newspaper story described this as an example of a great danger, like “a virus escaping from a medical lab.” The writers of the story were unaware that Stuxnet was designed to attack only a computer with very specific characteristics that just happened to be the design characteristics of the operating system at Iran’s Natanz uranium enrichment plant. Stuxnet has been found in hundreds of other computers. But it just sits there and does nothing since those computers don’t have the characteristics it is looking for.