Most of us do not know each other personally, so we do not have that kind of trust. The only easy thing we have is to ban them forever as the only persuasion, and still find ways to change the IP and the UID. In addition, a group of friends created a homemade AntiHacks that is still in development and a Launcher, which avoids injectors, at least in theory.
These days we are going to make the jump to the version of ArmA 3 v1.88, and instead of using LumaEmu as crack, we will use a Steam emulator and an original client of the game that we bought and an updated version of InfiStar. The most common is the Cheat Engine, which in 'low doses' is undetectable by InfiStar, and is very flexible. They share them among themselves, and it is a matter of time for a nonconformist to dare to break the rules. Some of them even have internet in their homes. It is enough to sit one day in a Wi-Fi park for a couple of hours. You would be surprised at how well they are finding hacks on the internet.