Sony's controversial DRM technology - which installs rootkit-style software when users play Sony BMG CDs on Windows PCs - can be defeated easily with nothing more than a piece of masking tape, security researchers have discovered. Sony BMG has endured a public-relations and legal nightmare after it emerged digital rights management (DRM) software installed on some of its music CDs (First4Internet XCP program) created a handy means for hackers to hide malware from anti-virus scanning programs....