Server got hacked :(

Herro my felllow minecrafters, my server got hacked my a man with a username d1m0a1n. If he ever at all joins your server ban him. We used to be friends until he made himself Owner and me builder on MY server. I then proceeded to ban him. He didn't like that idea! So he somehow got into the server logs and shut down my server. This man also is very hotheaded he treats everyone with disrespect. THIS NEEDS TO END! Please tell me if you see him. My username is duolo1302 and the other owner of my server is canmaster. (We both bought it). Thanks for reading and please spread the word!