The fact that ISPs are working with the RIAA in a bid to squash piracy is far from new. A leaked document claiming to be AT&T training materials, however, suggests that the operator is about to stop talking, and start doing. According to TorrentFreak notifications will be sent out to customers on November 28th about the change in policy, with those suspected of illicit downloads receiving an email alerting them of the possible copyright infringement. We'd previousl