"Sony's rootkit-style DRM software, XCP, designed to prevent
copyright infringement, looks like it's breaching the terms of a
copyright agreement itself.
"In fact it contains code written by the Motion Picture Ass. of
America's villain of the week for several years running, 'DVD Jon'
Johansen, who was dragged through the Norwegian courts by the MPAA
using a very dubious extension of US law, for circumventing the DRM
on DVDs. Johansen eventually prevailed in having the spurious
charges against him thrown out..."