This analysis of Warface in-game communication protocol is against multiple points of the Crytek Terms of Service. So... I am not responsible for any other people acts trying to reproduce what's shown here, and I discourage anyone not aware of the possible risks (permanent ban, account deletion, etc. ). Please do read the Crytek ToS before attempting to reproduce what's described here.
Update: Some of the exploits or remarks have already been fixed the time you read this. Indeed, while I was writing this document, I also raised the issues to Crytek devs and let them time to digest. I've kept them here in hope it will make good stories to tell. Sadly for them, the main content of this analysis still remains valid.
Summary