I got to learn about Stuxnet only recently. I was pretty shocked after reading about it, i am unable to digest the fact that a computer worm, for first time was designed to damage real physical hardware and it probably did do the damage to Iranian Centrifuges. This was purely science fiction until now, it was the thing that could only happen in Hollywood movies. For me its changes everything computer virus, worm, cyber warfare. The era of true cyber warfare began with stuxnet attack. if Stuxnet has been designed to penetrate into Iranian nuclear installations, It should also be able to target military networks, penetrate and do real physical damage to military hardware. Fighters have Flight control computers, Radars, Air defense networks etc It all looks unlikely, but considering the stunning sophistication and complexity of Stuxnet, these scenarios become probable in future.