Several voices in the security world are confirming reports of the existence of spyware in the form of rootkits on Sony's music CDs. Security company F-Secure claim that Sony BMG is using the rootkit-based DRM on some CDs sold in the U.S., perhaps for as far back as March of this year.
This unethical behavior by Sony shows the lengths companies are willing to go to protect the music. Passing around malware in the form of rootkits could create real problems for many computer users and possibly leave them susceptible to other hackers in the future. The whole purpose of this rootkit is to be sneaky and stick stuff in they don't want you to know about.