According to the antivirus company F-Secure, someone has written a remote access Trojan that exploit's stealth-like Sony DRM software. As reported last week, Sony BMG is installing root kits when you play certain Sony CDs on your PC. The new Trojan, however, is deeply flawed. While it does not pose an immediate threat, it does illustrate how placing root kits on remote PCs can expose those PCs to malicious code. Currently, most antivirus products do not detect or remove root kits.