I'm not sure how relevant this is given that people claim the purpose of Stuxnet was to attack Iran's nuclear facilities. Facilities like that usually aren't al

I'm not sure how relevant this is given that people claim the purpose of Stuxnet was to attack Iran's nuclear facilities. Facilities like that usually aren't allowed to install software updates anyway. The reason is certification. They install certified software on a machine, and then it gets locked away and nobody is allowed to touch it. Then again, I don't know if this is true for Iran as much as it is for western countries.