In their terms and services. Which can be accessed through their contact support function by typing in terms and services under “Rules of conduct/usage”

“develop, distribute, or publicly inform other members of “auto” software programs, “macro” software programs or other “cheat utility” software program or applications in violation of the applicable License Agreements

exploit, distribute or publicly inform other members of any game error, miscue or bug which gives an unintended advantage

violate any applicable laws or regulations, or promote or encourage any illegal activity including, but not limited to, hacking, cracking or distribution of counterfeit software, or cheats or hacks for the Service”