Hello! First of all i apologize if this is not the right place for this thread, if so, please move it to the correct place. Yesterday something happened I'd never seen before. I came home from school and basically all the players were in a panic on the server. People walked around with the whole inventory filled with stacks of diamond blocks, beacons, emerald blocks and more. Some players on the server, which according to statistics had started on the server the same day, had several million dollars, something that obviously is not possible to get in such a short time (a few hours). The players told me that some guys suddenly had started on the server at about 11 o'clock and started handing out lots of things that nobody really should have in such enormous quantities. The duplicated things were everywhere. They had distributed them to everyone on the server, the entire economy was crashed for good. But it did not stop there. In the end we found out who was guilty. We banned the players and hoped that it would stop here. But we were wrong. The mean players use the VPN and have several different accounts, so our bans do not work. The hackers continue to duplicate things and spread them on the server. I was talking to one of them on skype, and all he says is that it's very easy for them to carry out the duplication, but he will not tell me anything more. After talking a little more with him, he told also told that this is a glitch in bukkit and a "plugin". I asked if the plugin was towny, a guess by me, and he said "believe what you want.." I really need your help. Since I can not keep out the players for good, I have to find out what they do to duplicate things! I can not think of anything myself, I did not even think it was possible to duplicate things. But for them it seems super easy. They are not OP and I've checked the log, and they have left no strange commands. Have any of you experienced the same thing the past few days and do you know how they are doing and how to prevent it from happening again? Please help me!