With Call of Duty: Black Ops II releasing this week, Treyarch has released their 'Security and Enforcement' policy, which details conduct that will result in users being banned.
According to the document posted on the Black Ops II community forums, bans range from the temporary to the permanent, with a minor offense defined as something that causes no "quantifiable damage" to another user or the community, and permanent bans involving malicious damage to other players' experience or large scale organised damage to the community.
The policy takes into account modding and hacking, pirated content, unsupported peripheral devices and applications, boosting, glitching, offensive behavior and offensive emblems.
Read the full document here. Black Ops II releases November 13.