Rumor: Sony to implement PC-style serial key system for PS3
http://www.vg247.com/2011/01/21/rumo...ystem-for-ps3/
Also Inifinity Ward says there are hacks for Modern Warfare on the PS3 that are unfixable cause of the PS3 hack but Black Ops isn't affected because Treyarch didn't rely solely on the PS3 for security.
http://www.gamespot.com/ps3/action/m...es%3Btitle%3B3