Sony - In October 2005, it was revealed by Mark Russinovich of Sysinternals that Sony BMG Music Entertainment's music CDs had installed a rootkit on the user's computer as a DRM measure (called Extended Copy Protection by its creator, British company First 4 Internet), which was extremely difficult to detect or to remove. This constitutes a crime in many countries, and poses a major security risk to affected users, as well as a small drain on computer system resources. The uninstaller Sony initially provided removed the rootkit, but in turn installed a dial-home program that posed an even greater security risk — a fact that drew further criticism of Sony's actions. Sony eventually provided an actual uninstaller that removed all of Sony's DRM program from the user's computer. Sony BMG is facing several class action lawsuits regarding this matter.