DRM

What is DRM Digital Rights management Used to describe a number of techniques used to restrict the use of digital media

The law Digital Millennium Copyright act To implement the 1996 World Intellectual Property Organization treaties Illegal to –Circumvent anti-piracy measure –Manufacture, sell, or distribute code- cracking devices

Examples Content Scrambling System (CSS) –Used to encrypt DVDs –Jon Lech Johansen cracked it DeCSS – Lets DVDs play correctly on Linux –

Examples cont. Sony rootkit of 2005 –Automatically installed –Sent “stuff” back to sony –Easy to get around –Hard to remove –Hacker friendly

More examples All the music file format –Windows media format –iTunes –Real player Don’t all play all MP3 players

Other names The Free Software Foundation –Digital Restrictions Management –Moglen and Free Software Foundation founder, Richard Stallman, are co-authors of the GPL version 3 ZDNet Executive Editor David Berlind –Content Restriction, Annulment and Protection or CRAP