I have a solution to the problem of hackers. I happened to this idea after analyzing over time the hacks that currently exist and have discovered that hackers use versions prior to 1.8. Then it occurred to me that cubecraft changed only for version 1.8 onwards. this will make disappear most hackers because these hacks using older versions like 1.7. this will make the difference because they have not developed hacks for version 1.8 onwards and if that should occur at least the server will be free from hackers long. Thanks for your attention and sorry if my English is not so good.