Like I mentioned on my previous post, unless Developers can implement a system that can automatically disconnect players when they are (speed hacking, infinite health hack, bypassing restricted areas, and purposely lag blocking), we're going to keep having hackers. You can ban them sure, but they'll just get on a new account and do it again.
For example: There's a player named NPC that's outside of the Arena everyday ranting about how admins are and I quote, "3astards/Dum/WH0R3Z/etc", gets banned, gets on a new account and repeats the process. I've seen him already with a flag from the US, UK, and India.
Only Developers can halt the issue but that isn't their priority at the moment.