Okay so... On the server I am part of staff on a few days ago we saw bits of the server blown up... We started questioning ourselves and wondering who did it, seeing it was protected with world guard and safezone and all that... Then a player joined and asked a member of staff who the owner was, he told him who the owner was, then we saw him log out then the owner logged in. The person on the owners account was not the owner and it was clearly that person, he is capable of hacking all Minecraft accounts then he hacked the console of our server, opping himself then we banned him. He somehow unbanned himself and opped himself again. At the moment he is online and opped, he opped himself ingame without being opped already, and is watching the console, my friend just deoped him and we think he might get angry and ruin the server. Any tips??? He has access to the console!!!