BAN all cheating Russians

If you have admin rights for a game server or a hosting a game which offers checking player's nationality with high accuracy - BAN all cheating russians. Two days ago finished my research how many of them must be banned, and the numbers (sorry, details are not available due to the techniques used in the research) are around 95% from all gathered player accounts. They feed, they spam in chat, they use exploits found in the games, they use all types to break the system. Just ban them. Thank me later