US-CERT: First 4 Internet XCP (Sony DRM) Vulnerabilities

US-CERT is aware of several vulnerabilities regarding the XCP Digital Rights Management (DRM) software by First 4 Internet, which is distributed by some Sony BMG audio CDs. The XCP copy protection software uses "rootkit" technology to hide certain files from the user. This technique can pose a security threat, as malware can take advantage of the ability to hide files. We are aware of malware that is currently using this technique to hide.