Player's are hacking my server with Notch

Hello guys, i'll need some help.

From my Server, i deleted "Notch" from op.txt, and banned "notch" with /ban notch.

My problem, this ban is regardless to those hacking kidz.
Somehow they giving OP to themselve through notch - Notch is rewritten in op.txt through player...

Is there anything i can do to prevent 'em from?

It's a online:false Server with xAuth and some other plugins. Newest recomenced craftbukkit build :/
Today i installed NoCheatPlus in extention to those hacker, in my hope this will prevent them a bit - but iam not sure.

I'm a little bit frustrated about that leak :/

 

Online mode: true

Bukkit do not support offline mode servers

TnT mbaxter md_5

 

Anyway there may be someone with same problems and a solution ... :/

 

Again

 

... Offline mode is for people who haven't bought the game, and is VERY bad. That's why bukkit doesn't support it.
You will not get any support from these forums, I think.

 

online-mode=true IS the way to solve this problem.

Locked.