check right part of buffer? why does this move

src/login/character.rs

@@ -340,7 +340,7 @@ impl<EG: EntityGateway> ServerState for CharacterServerState<EG> {
               -> Result<Box<dyn Iterator<Item = (ClientId, SendCharacterPacket)>>, CharacterError> {
         Ok(match pkt {
             RecvCharacterPacket::Login(login) => {
-                if login.security_data[0..4] == [1,3,3,7] {
+                if login.security_data[8..12] == [1,3,3,7] {
                     Box::new(self.send_ship_list(id, login)?.into_iter().map(move |pkt| (id, pkt)))
                 }
                 else {