Hackers released a tool about 24 hours ago which allows users to swap their PS3 console ID with another PS3 consoles ID.
Sony bans PS3s based on their console IDs (not MAC address like Xbox360s) and this tool allows hackers to swap the banned console ID with another unbanned console and connect back on to PSN.
Users can only use authentic PS3 console IDs (off other consoles) and can't generate them themselves, hence they have to get real PS3 console IDs. Buy a PS3, get the ID, return it to store kind of deal...
Furthermore, the tool can be used by people who have not been banned yet, as a safety net. If they use this tool to connect to PSN before they get banned and eventually get banned, their console ID is not banned but some other persons PS3.
Not going to put any links or tool names, but this could potentially become quite a bad situation. IMO Sony should have never picked a fight with the hacking community...seems like its getting out of control.