Arstechnica: The nation’s top Internet service providers sent more than 1.3 million infringement notices to alleged copyright scofflaws last year, according to a study released Wednesday.
The system works by matching IP addresses to account holders, and the notices were sent by just five ISPs participating in the so-called “copyright alert system” (CAS) that commenced in February 2013, a US program strongly backed by the Obama administration and run by the newly created Center for Copyright Information. Those ISPs are AT&T, Cablevision Systems, Comcast, Time Warner Cable, and Verizon.