Spies

A spy is somebody from one alliance who joined a different alliance with a different nick. Ussually spies who move into the different alliance play through the tactical information from the alliance. Such information like potential attacks, defense or tactics can be very useful for other alliance to counter on. Though often it is easy to notice if an alliance has a spy because the attacks need careful pre-emptive defense. If the defense shows up before the actual attack is launched its clear the alliance has a spy. Defense is more difficult as this requires very specific information about the target regarding what type of defense is sent.

Another reason for somebody to join multiple alliances is because this way the person can get from more sides defense but aswell being 'added' in the arbiter. Though this can also reveal the spy as soon as the arbiter gets stolen from an alliance.