Kigen's Anti-Cheat

My problem is that today, I bought CS:GO and I wanted to play Zombie Escape but I was unable to join because of the Kigen Ban. I don't know why I got this ban or how, but it seems to be universal (I am unable to join source zombie servers protected by Kigen).

My Steam ID is STEAM_0:0:25962124

Please help!

Sorry, but you were caught using the cheat LSS.

You'll need a new Steam account to play on protected servers.

~Locked