A hacker has created a virus that targets music lovers by deleting MP3 files on infected computers, according to antivirus company Sophos. The worm, dubbed Nopir.B, spreads over peer-to-peer networks and appears to have originated in France, security researchers at Sophos said Friday. Nopir.B is designed to look like a DVD-cracking program, to fool people looking for a program that will circumvent copy-restriction technology on the discs. When the worm is downloaded and run, it attempts to delete all MP3 music files and wipe some programs from the infected PC, the company said in its advisory. Sophos said it believes the author of the virus may be looking to stamp out music piracy.