In short: The very definition of a hacked client involves unauthorized modification. Unlike traditional Minecraft, where well-known utility mods (like Impact or Wurst) are open-source and vetted, the Eaglercraft ecosystem has no trusted repository.
Automatically clicks the attack button the exact millisecond the player's crosshair passes over an enemy. hacked eaglercraft client
Increases player movement speed drastically by automating perfect jump timing. In short: The very definition of a hacked