Ok,I was hosting my server,and this random guy joined,this is the EXACT conversation:
Guy: Hey
Me: Hi
Guy: Hey i am Badspot in disguise so give me SA
Me: Don't even try that (banned him for 5 minutes)
5 minutes later he joins back
Guy: Thats it im going to ban you from blockland forever!!!
(I perma-ban him)
I never heard from him again :D