I haven't heard anything about their security measures. And to be honest, thats a good thing. If they tell us about their security measures the less honest of our community will already know what they are up against and have like 4 weeks to prepare for it.
So yeah all in all its a good thing we don't know (assuming they will do stuff, which they will after all being a hardcoe PC dev they will want it to be hack-proof)
On the other side of things, the huge rewards you get form actually doing an objective should give those cod-style players insentive to stop playing that way and do the proper play style for this game.
I actually think this game will be a great re-education tool for many newer gamers who don't even know what the word objective means.