I had alot of problems being kicked out of Dirty Bomb with saying: You were kicked due to a game security violation
I now found how to fix this, i dont know if im the first to post this but i want to help everyone out, How to fix this?
Anyway if you got this problem follow the next steps.
Launch Steam -> Libary -> Dirty Bomb -> Dirty Bomb -> Properties -> LOCAL FILES -> Verify intergity of game cache
it wil now scan your files and should detect 2 missing files. The missing files are normaly 6.8MB.
WARNING: If you leave Dirty Bomb you have to do this again!