Is that a question? Cause no, if they care about preventing cheating, they generally don't trust the client. WoW is a good example of this. Every action requ

Is that a question? Cause no, if they care about preventing cheating, they generally don't trust the client. WoW is a good example of this. Every action requires a client->server before it actually starts, though they are generous enough to allow for lag in that, and to do client side prediction so you don't notice. (I think movement may be partially/mostly client side, but they do do checks for people "speedhacking" for that on the server side as well)