The original specification for Compact Disc Digital Audio, known as the Red Book, did not make any provision for copy protection, and by the late 1990s millions of ripped audio tracks from Compact Discs were compressed as MP3s and shared over the internet.
The music industry did several things to try and rectify the situation, including setting up online music stores selling music through a subscription model, and the Recording Industry Association of America also prosecuted over 20,000 individuals they accused of sharing pirated MP3s.
Starting around 2000, the music industry also began to put copy-protection onto audio Compact Discs. Companies such as EMI, Sony, BMG, and for a time Warner used copy protection as a means to prevent ripping of audio tracks onto a computer.
Since the discs were non-compliant with the Red Book standard, they were not supposed to display the Compact Disc Digital Audio logo on either the disc or inside the jewel case. There was also a consumer outcry against the disks as they prevented tracks from being copied to the purchaser’s personal audio devices, and some CD players such as those in cars would not play the disks (since these sometimes used some CD-ROM components, especially if they were intended to play disks containing MP3 or other types of compressed files).
In 2005, it was discovered that Sony BMG were using a type of copy protection called Extended Copy Protection (XCP) which installed a rootkit on a user’s computer. This sparked a scandal as it could be used by malware, and Sony announced a recall of disks using XCP and suspended its use.
EMI was the last major label to abandon copy protection in 2006.
Sources / Resources
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