Three weeks after receiving a subpoena from the U.S. District Court in Northern California, YouTube has reportedly identified a user accused by 20th Century Fox Television of uploading episodes of the show 24 a week prior to their running on television. That user, named ECOTtotal, is also alleged to have uploaded 12 episodes of The Simpsons, some quite old. Apparently Google and YouTube were willing and able to identify the owner of the username ECOTtotal, acording to a report.
This should be a lesson to everyone who uses YouTube, as your information is not exactly safe. It will be handed over if need be, but will likely only happen if you leak shows that FOX airs ;-)
Source: Tech Crunch