Before you start posing here saying: OH MY GOSH, THIS IS SO STUPID WHAT ARE YOU THINKING, hear me out. Now, hackers have been a problem for years, and still, they are bypassing the newest anticheats etc. My idea was not to implement an actual anticheat into Spigot, but something that simply checked what version you were joining with, and if that version was detected as a hacked client, it would kick you for using hacks or something. I am not 100% sure if this is possible. One thing I know is there is a plugin (I forget what it is called) which makes you install an application before joining the server which checks to see if you are joining with a hacked client. But one problem is with that is that all players must install that app to play which probably gets annoying having to start it up before playing. My idea is that you could implement something into Spigot like this, but I am not sure if this is 100% possible.