Which laws outlaw illegal downloading of music movies or images and circumventing anti-piracy measures built into most commercial software?

* The Copyright Act of 1976 (Title 17 of the United States Code) is the principal U.S. law governing copyright. It provides copyright protection for original works of authorship, including literary, musical, dramatic, artistic, and other intellectual works.

* The No Electronic Theft Act of 1997 (NET Act) is a U.S. law that makes it a crime to willfully infringe a copyright by reproducing or distributing, for commercial or private financial gain, a copyrighted work, including sound recordings, audiovisual works, and computer programs.

* The Digital Millennium Copyright Act of 1998 (DMCA) is a U.S. law that implements two 1996 World Intellectual Property Organization (WIPO) treaties: the WIPO Copyright Treaty and the WIPO Performances and Phonograms Treaty. The DMCA criminalizes the circumvention of technological measures that are used to protect copyrighted works from unauthorized access or copying.