What is the problem? Currently (because Mojang is smart) you can walk, run, fight and do other things while having your inventory open and manageable. This gives other players without any hack tools a big disadvantage compared to the hackers. What should Spigot do instead? Close the players inventory if he/she is trying to: 1. Hit an entity (careful THORNS enchamtnet!) 2. Interact with something 3. Break someting 4. Place something 5. Chat something 6. Walk/run somewhere (Player velocity and falling might get annoying here...) 7. Eat something (not sure if really possible) 8. Fire an arrow with a bow (not sure if really possible) 9. Maybe something else?.... While having a inventory open (E, chest, hopper and other). Spigot should also prevent this even if a player is ignoring that his/her inventory got force closed (freecam). Does this give any bonuses? Yea this would limit the "AutoSoup" hack at a good amount since players cant move items around any longer while fighting or running. Any other information? NoCheatPlus and AntiCheat aren't really covering this at the moment. All they do is prevent too fast inventory management which doesn't really catch it at all. Original idea by asofold and extended by me.