Kigen's Anti-Cheat

This also might be of help
http://sethblock.tk/

You can add such a check by modifying the plugin.
kac_addcvar sh_wallhack

You also may find some of these links of help.
http://facepunch.com/threads/1143435?highlight=SethHack

jenthe123 wrote:STEAM_0:0:46692243

Please unban me else i dont got my own server and its my Birthday!!!!!

STEAM_0:0:46692243

Checking 'STEAM_0:0:46692243'...
Steam ID is NOT banned.

Your ban is a local server ban & not on the KAC global ban list.
This is local to your own server.

~ Locked

You did not post this in the protest thread ... I have moved it for you. You did not provide a Steam ID number as is required in the protest read me. I however used this site http://steamidconverter.com to convert your community profile into a Steam ID http://steamidconverter.com/76561198053650214 ...

Your funny as you did cheat. KAC bans that are added to the Global ban list are only from trusted servers that are very few. Your previous protest showed valid information on a KAC ban. STEAM_0:1:13186628 Invoked on 10-04-08 18:26 Reason Cheating. KAC ID:5.15 5.x - Failure to match server replicate...

STEAM_0:1:9936283 Checking 'STEAM_0:1:9936283'... Steam ID is on the banlist. You have played on KAC protected server, as your ban was added to the global ban list by a trusted server. This is an old ban Invoked on 09/28/08 10:50 Reason Cheating. KAC ID:5.15 5.x - Failure to match server replicated...