In a recent interview with Josh Olin, he confirms that Black Ops with NOT be hackable as it was in MW2. Though you saw the same eventually in CODWAW and COD4, it was not as much because MW2 was the most recent and popular, and still is till Black Ops comes out.
This is great news to legitimate people out there, such as all of team bRos. Especially since we all earned 10th prestige legit in MW2 too.
He talks about the game not being hackable, and that they have put in preventative measures for these hacks at the end of the video. He also mentions they will be able to moderate the leaderboards!