Considering current situation of Aurora outbreak and its undetectable source. I will suggest a strong account approval system for the server.
UID should be approved along with nickname so that hackers don't exploit in players' accounts to evade approval.
For approval, some appropriate players with their experience should be hired for quick approval when staff isn't around.
-1 will lose the ability to go underalias.
Underalias accounts can get approved after checking their aliases and UIDs.
This can be the solution to avoid it.