Well here we see what NL did to combat cheating, how it failed and what they are planning:

This is the situation, we have created updates that were intended to stop the trainer programs from allowing cheating in our Multiplayer games. One week after the release of the update another trainer was written to counter our update and the cheating resumed. We then countered with another update. And again our update was compromised and now the cheating continues. Since we cannot stop a private party from writing their own programs (even if these programs corrupt our multiplayer gaming), at this time we will not be able to stop the cheating. We are however developing a patch to identify cheaters and boot them from stat servers. We do suggest that you host your own game and BAN anyone that you believe is cheating. Then when these cheaters realize that they cannot get into any game, maybe they stop cheating.