Looks like hackers are already ruining Call of Duty: Ghosts. Some people are experiencing major stat-boosted, which can really sour the online experience. Unfortunately, Activision says there's nothing they can do.
If your stats are boosted by a hacker there is nothing we can do. Activision will not reset your stats. Please note that knowingly entering a hacked server may be grounds for a ban. To avoid this, make sure you do not accept game invites from people you do not know or trust.