*** This only affects Counter-Strike and Day of Defeat servers. ***
We've updated the public security modules again. These security modules detect a few more OpenGL cheats with increasingly greater ban penalties for repeated detections.
We're not going to list the actual cheats VAC will/won't detect, since there are many cheat developers and cheaters subscribed to these mailing lists. We'll continue working through the active cheats and will update VAC as often as we can.
Your Counter-Strike and Day of Defeat servers should update themselves automatically. Let me know if you have any problems with these security modules and we'll look into them right away.
Thanks.
Eric Smith
Valve"