How does the newbie protection work?:SI
You may begin attacking other Bases as soon as you have offensive units, but you may want to wait until you are ready and take note of the following information:
Users registered for less than 3 days fall under low-level player protection.
They can attack any player but no one can attack their Base.
Any new player that attacks a player who has been in-game for over 3 days will LOSE THEIR PROTECTED STATUS! If two users initiate a conflict with each other while both have been playing the game for less than 3 days, the conflict will continue regardless of the users' future relative levels or time in-game.