Sony slated over anti-piracy CD

News that Sony's music arm have been accused of using the tactics of virus writers to stop its CDs being "illegally copied".

One copy protection system analysed by coder Mark Russinovich uses cloaked files to hide deep inside Windows.

The difficult uninstallation process left Mr Russinovich saying that Sony's anti-piracy efforts had gone "too far".

In response to criticism, Sony BMG said it would provide tools to users and security firms that would reveal the hidden files.

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