On Tuesday, the makers of the popular cheat called EngineOwning, which players have to subscribe and pay for to use, said on their website that the cheat is now "detected," meaning players who use it will get caught by Activision for using it.

It's unclear if this is the cheat that all the banned players were using, but several users inside the EngineOwning forum also complained of being banned on Monday.

In a thread titled "Awesome, Until Banned," a customer wrote that "this hack was an amazing tool for getting to learn the game in and the maps. And after having stopped using it a little over a month ago, I woke up today to see this. I've noticed the bans going around, and the fact that the software was detected, but seriously?"