How do I create a ban script that bans exploiters when they go too fast or jump too high?

I want a ban script that forbids exploiters when they go too fast or jump too high. I need my game to be fair for everyone. So I need a script that looks at the speed of the player and the jump power.

Oh, and I also want the ban script to be in the ServerScriptService, so exploiters can't see the script!