69 pages of in-depth analysis on what Stuxnet actually does. This is the best analysis I've ever seen of any malware. It's amazing how much stuff is in Stuxnet, how much is new techniques, and also interesting how much sanity checking is in it. http://www.symantec.com/content/en/us/enterprise/media/security\_response/whitepapers/w32\_stuxnet\_dossier.pdf