I can't say anything about GTA because I don't play it...but as for BO2,I've played it with my PRIVATE CID now for the last two weeks now and I haven't had my CID banned yet.I've even been modding it like crazy.I did get one account banned for modding Zombies but only because someone probably reported me.Still,my CID is running strong.It probably has to do with my system being on CEX CFW and my not using modified Eboots.