Minecraft How to find a hacker

Hi. Since I have started reporting hackers a few days ago I would like to create a thread to collect experiences as to what a hack does (when is it one, when is it a bug).
Feel free to contribute, I will try to update the thread. This is just for hacks that could be applicable on IJAH's server.

OITC

• Aimbot
  A player turns his head instantly to other players and never misses a shot/hit. Sometimes I find it to be difficult to differenciate between a good player and an Aimbot, but at some point movements can't be done quick enough with the mouse.
• Killaura/Forcefield
  A player can hit players without directly looking at them. Sometimes they are subtly looking away, but sometimes they chat while hitting you or simply look in the opposite direction. Those are one of the worst hackers, since they simply walk around and let the mod get them killstreaks. (Well, any hack is bad.)
• Anti-Knockback
  A player doesn't move when being hit. Even without any sword, players would move when being hit.

Misc.

• Fly hack: difficult to identify since a bug in minecraft allows for players to look like they are half a block higher than you. If a person suddenly lifts up or shifts down though, it's a fly hacker. Shouldn't be found on IJAH servers since, you know, that kind of cheats can be prevented.

 

Fly hacks --- One of the most obvious.

 

Can also be mistaken for lag. Unless they are freely moving

 

Well yeah, but under normal circumstances. However, an indicator that the person is using fly hacks is if (s)he is shifting and moving down, and it depends on how far up they are in air. I've seen my fair share of fly hackers.

 

Updated.

 

This actually kinda helps..

Thanks