Interesting Read:
The Copyright Alert System (CAS) is a private system for alerting, educating, and punishing subscribers of five major Internet service providers in the United States of America, based on accusations of the use of BitTorrent and peer-to-peer file sharing to infringe the copyrights of certain entertainment corporations by distributing, without authorization, those companies' intellectual property. The press has branded the CAS as a "six strikes" program.[1] The participating Internet service providers (ISPs) are AT&T, Cablevision, Time Warner Cable, Verizon and Comcast.
The CAS is intended to be a graduated response system wherein participating ISPs send up to six[2] electronic warnings notifying subscribers of alleged copyright infringement, as reported by a monitoring service working on behalf of participating copyright owners.[3] If copyright infringement is reported after a final warning, the ISPs have agreed to implement "mitigation measures", which can include penalties such as bandwidth throttling.[4][5]
The CAS framework was established on July 7, 2011 by the Center for Copyright Information (CCI), after 3 years in the making.[2] After multiple delays, ISPs began implementing it in late February 2013
https://en.wikipedia.org/wiki/Copyright_Alert_System