Kigen's Anti-Cheat

0:1:2080045

I just recieved this account from one of my good friends in RL. He said he was quitting pc games so I asked for his steam account, and I gave him 15 dollars for it. However, when I try to play cs:s or cs:s beta...it says I'm kac banned and tells me to go here? He told me that he tried but they ...