It's only been about a week since the world learned about the stealth software that some Sony-BMG music CDs install when you play them on your computer. But, as reported by The Register and Reuters, someone has already written a virus to exploit the security vulnerability created by this invasive technology.
The virus travels around in an email, and if executed, reportedly hides itself inside the rootkit and then installs an IRC backdoor. The rootkit's cloaking doesn't just protect itself from discovery--it protects this new virus as well. Just another example of why Sony-BMG's invasion of your computer is a dangerous development.