PadRacerExtreme writes "Vista includes the much maligned 'Genuine Advantage' layer inside, which ensures that your copy of the OS is legit. If you're running a non-validated copy you get no upgrades, no security protection, nothing. That's all well and good, but what happens if a cracker tweaks that Genuine Advantage layer for its own good? Dvorak sees a huge problem, just waiting to happen. What's the vulnerability?" From the article: "I suspect the policeman [WGA] will actually be hacked before the OS. It might actually be easier for the pirates to create a fake cop that constantly authenticates fake versions of Vista than it will be to create a Vista imitation that can pretend to be a legitimate version. There is some irony to that idea. But that's none of my concern. I'm more worried about some joker creating a virus or exploit that turns the good cop into a bad cop, and I can only imagine the destruction and hassle that will ensue."