Blizzard Community Manager Daxxarri has posted today regarding a recently discovered Arena exploit. While precise details are not known, it appears this relates the a method whereby players could escape from playing against comps they were struggling with, countercomps, or teams they had faced previously, without losing MMR by exiting the game.
This, while not win-trading itself, led to win-trading, and, as Daxxarri says, both win-trading and the use of exploits are completely against the rules.
Providing an environment where players can compete in the spirit of fair play is extremely important to us, particularly in rated Player versus Player combat. As part of that commitment we regularly monitor gameplay, and have discovered an issue where some Arena teams have exploited the queuing system to obtain high team ratings, "dodge" unfavorable team compositions, and engage in win trading.
These, and all, exploitative activities are absolutely prohibited. We will investigate the situation carefully, and players that have been found to have participated in exploitation will be subject to the appropriate actions against their World of Warcraft accounts. In the meantime, we are currently working to resolve any remaining issues with the queue system to prevent this behavior in the future.
Players will have to wait and see just what Blizzard's investigation reveals, and what their actions will be as far as punishing the perpetrators. Many are already calling for ladder resets and MMR resets, but of course, these can punish the innocent as well as the guilty. The nature of this bug is such that it's possible some players benefiting from it may have been unaware they were doing so.
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