I'm sure someone has said this in a previous post but just incase; There is one very simple way to deal with having potential spies in your group. When you do your line up for war, always line up the same. Then when there is 10 seconds left start moving your lands. Be careful tho, once the count reaches 3 seconds you will be unable to make further changes. By moving the lands at the last second you prevent the spy from being able to relay info to whoever. So, just do this and having spies will not matter at all. If anything they are helping you get group contributions (And if they aren't you might as well kick them for not being productive.)