(By griefed i mean the person hacked op, deleted spawn) I have a server that ad the original IP of delta-craft.no-ip.org, then i got griefed twice, changed it to chaos-craft.no-ip.org, still got griefed about 3 times. He logged on with a different account every time, bragging that he can do whatever he wants, and that he had hacked about 500 minecraft usernames. his IP usually changed, here are some i got: 188.8.131.52 184.108.40.206 220.127.116.11 He used a spam bot, loggin on about 100 people saying my server sucks (Fixed this with an anti-spam plugin), But he STILL could op himself. I removed /op and /gamemode <user> 1 from player commands (only console can do these now), he still opped himself, and kicked, and banned me, and all the players. this has happened about 5-8 times over the past 2 days. Im wondering if theres anything I can do to get rid of this guy. I have just changed my ip (was **.**.**.23, now is **.**.**.99) but not sure if this will work. is there any plugin, or something i can do to my computer to stop him hacking into my console? (Technically thats illegal, right?) I have whitelisted my server, he keeps un-whitelisting it by hacking the console, not even logging in.