And you think that couldn't happen on XP? If anything it would be EASIER for that to happen on Windows XP because thanks to UAC in Vista it does add an extra layer of basic security.
Where did I say that? All I said was XP has good enough basic security, as does Vista and 7, but users shouldn't rely on the OS to shield them from viruses. And UAC is worthless, Comodo Firewall can do the same as what UAC does on XP/Vista/7 and do a better job of it, since you can run it in paranoid/sandbox mode if you're that worried about being hacked or your computer being (possibly) compromised, and you can stop the program transmitting info to the internet without it making any risky changes to your PC, unlike UAC which will give the program near-full control if you "Allow" it to. UAC is basic level security almost identical to what Linux has had for ages before Windows 7/Vista (which will not let you do change anything major without you being the root user and giving it the go-ahead).
Edited by Am* - 5/16/11 at 11:56am