Call of Duty: Modern Warfare 3 Cheats
VAC is enabled on all multiplayer servers, public and private. Any modifications to the game other than editing config files can result in a VAC ban. Examples of such modifications include but are not limited to console enablers, VAC disablers, and server hosting mods.
Official statement: Link
[Edited by Nypheena, 10/13/2013 6:47:50 AM]