By David Kushner - Wired Magazine

Microsoft Under Fire By Hackers  

Method of attack: Hackers remove the Xbox 360's DVD drive and tweak the OS to permit the use of "backup copies." For PC titles, they circumvent copy protections and share them on torrent sites.

Most-pirated titles: Call of Duty: Modern Warfare 2 (PC), 4.1 million copies ; (Xbox 360),970,000 copies

Defensive maneuvers: Many PC game developers are experimenting with subscription fees, a la World of Warcraft. For the Xbox 360, over100 Microsoft staffers monitor the Xbox Live service and prevent modded consoles from logging on; hundreds of thousands of hackers (and cheaters) have been blocked.