Blizzard are reminding players that use of third-party software is very much prohibited. They point out that detection software is improving constantly and that action is taken against players who use such tools, up to and including account suspensions. They close with players needing to “remove third-party software that bypasses the security of the game client” or risk their accounts.
We continue to work to put a stop to the impact that accounts utilizing third-party software can have on World of Warcraft. We regularly implement new and better cheat detection aimed at identifying those who reverse-engineer and bypass our security protocols to modify the game client and/or control the game in ways that are prohibited.
We regularly take action against such behavior, up to and including the permanent closure of the WoW accounts involved.
The use of third-party software that modifies the World of Warcraft game client is against our Terms of Service. Part 1, Section C of the Blizzard End User License Agreement reads:
License Limitations
Blizzard may suspend or revoke your license to use the Platform, or parts, components and/or single features thereof, if you violate, or assist others in violating, the license limitations set forth below. You agree that you will not, in whole or in part or under any circumstances, do the following:
Derivative Works: Copy or reproduce (except as provided in Section 1.B.), translate, reverse engineer, derive source code from, modify, disassemble, decompile, or create derivative works based on or related to the Platform.
Cheating: Create, use, offer, promote, advertise, make available and/or distribute the following or assist therein: any code and/or software, not expressly authorized by Blizzard, that can be used in connection with the Platform and/or any component or feature thereof which changes and/or facilitates the gameplay or other functionality;
We expect players to remove third-party software that bypasses the security of the game client, to avoid penalties such as suspension or closure of your account.
