AT&T will start sending anti-piracy warnings to customers who illegally download content from November 28.
Repeat offenders will be blocked until they complete an online copyright course, according to documents leaked to Torrent Freak.
"In an effort to assist content owners with combating on-line piracy, AT&T will be sending alert e-mails to customers who are identified as having been downloading copyrighted content without authorization from the copyright owner," said the document.
"The reports are made by the content owners and are of IP-addresses that are associated with copyright infringing activities. AT&T will not share any personally identifiable information about its customers with content owners until authorized by the customer or required to do so by law.
Cablevision, Comcast, Time Warner Cable and Verizon are believed to be planning similar warning programs with six-strikes from the same date. Mediacom have already revealed a stricter program which will give a lifetime ban to repeat offenders, as previously reported.
The six-strikes concept was pushed by the RIAA who worked with the five major US internet providers to launch the Center for Copyright Information.
Are you concerned about the forthcoming six-strikes rule, or does it just mean you have nothing to worry about until you've already been given several warnings? Let us know what you think in the comments.