[Tidus93]

Users who organize to exploit the game for the explicit purpose of ranking up very quickly or to appear in a high position on the leaderboards.

• • Minor offense: Temp ban, complete stats reset, leaderboard entries removed once
• • Major offense: Temp ban, complete stats reset, permanent ban from appearing on the leaderboards
• • Extreme or repeat offenses: Permaban from playing the game online

source: Call of Duty: Black Ops