Yea it's their new try at an anti-cheat. It's a backdoor so they can monitor your active processes. They can use it for keystrokes, scanning active memory, indexing and examining your hardrive etc. They amended their TOS the other day, there is a nice little section in it now that says you agree to their use of this software to monitor for cheats. in fact iirc it says even posting on their forums is consent for them to use this.... but oddly enough everyone is right, you can remove the file and still play CA normally.