Sony, Rootkits and Digital Rights Management Gone Too Far
http://www.sysinternals.com/blog/2005/10/sony-rootkits-and-digital-rights.html

November 2, 2005 - This Service Pack removes the cloaking technology component that has been recently discussed in a number of articles published regarding the XCP Technology used on SONY BMG content protected CDs
http://cp.sonybmg.com/xcp/english/updates.html

World of Warcraft hackers using Sony BMG rootkit
http://www.securityfocus.com/brief/34

F-Secure: Sony releases update for DRM software
http://www.f-secure.com/weblog/archives/archive-112005.html