The Copyright Alert System is able to detect illegally downloaded material through MarkMonitor. AT&T, Cablevision, Comcast, Time Warner Cable, and Verizon are all participating. Neither the Center for neither Copyright Infringement nor ISPs have spelled out what happens if people continue to download or share pirated files, even after six warnings. The organization said it is designed to make consumers aware of activity that has occurred using their Internet accounts, educate them on how they can prevent such activity from happening again.
Source: https://thehackernews.com/2012/10/isps-will-warn-you-about-pirate-content.html