content: Microsoft informs the NSA about flaws in Windows before they release the fix on each 'patch Tuesday'. I am willing to bet that a a good deal of effort goes into tearing apart source to find security flaws in all sorts of programs. I want the US to have a large cyber arsenal for the same reason I want a large Air Force. It is just a bummer when they turn the cyber munitions on citizens. Also, "Zero Day" is a good book on Stuxnet.