DICE have pledge to care of cheaters who ruin the Battlefield 3 experience for others according to a recent blog post on the official site.
We have always taken cheating seriously. Starting today, we will further intensify our efforts to hunt down and rid Battlefield 3 of cheaters. Stats wiping and banning this disruptive minority is the only way they will understand that they are ruining the game for others. We do this for the millions of dedicated players out there who deserve a fair game, every game.