Not long after the release of Halo: Reach did players find an exploit to get easy credits. However, their luck's run out as Bungie are on the prowl, already rolling out credit resets for 15,000 players that excessively abused the exploit.
"We are in the process of applying credit resets to approximately 15,000 users who we have identified as the most egregious Challenge Reset abusers.
"A one day credit earning ban has also been applied, mostly to ensure that recipients receive an in-game notification of the action taken."
In addition, Bungie claims this is only at a preliminary stage, saying that a more "comprehensive pass will be occuring in the coming week as our automated Banhammer mechanisms grow accurate enough to satisfy our high bar for burden of proof."
So if you're thinking about getting rich the easy way, you'd better think again. And think hard. Nobody likes a cheater.