Nothing to do with Kieron here but lots of people think having avg, norton etc means your safe.. You ain't!! Metaspoit and other tools are out there and are bloody easy to use.
Most websites can be taken down very quickly should someone decide to ignore the computer misuse act and has an agenda. Tbh, once your hit you should use that safe back up disc, smash your CPU hard drive and clean install. Even then if you are on a shared network and another CPU in that network is hit it could hop back anyway
Not that I know much about hacking, security and network defence mind