[Amads]

On my server I have a timer that constantly checks X, Y, Z positions, and if there is a big difference between two consecutive checks then you've just detected a cheater. It's good to check if a player is inside a vehicle or not, his speed and is he perhaps paused (that can be an issue if he's a passanger in a car and somebody else is driving)

// another thing, if there are teleport commands/whatever in your gamemode it is good to exclude potential false warnings/bans when a player uses a teleport