Using your Internet service to infringe copyrights is illegal and a violation of the AT&T Internet Terms of Service (TOS) and Acceptable Use Policy (AUP), which applies to all users of your account, and could result in mitigation measures including limitation of Internet access or even suspension or termination.
How does this affect me?
Through the Copyright Alert Program, users are given an opportunity to understand and change behavior that may be resulting in Copyright Alerts. However, if they receive multiple Copyright Alerts, they may encounter corrective action or mitigation measures, which may limit or inhibit Internet access.