Until someone can convince me otherwise or can come up with a fair system, there are currently no rules concerning PvP. I'm not going to waste my time trying to enforce rules that are impossible to enforce without proper real-time logs or better administration tools. The only thing that will get you banned is spamming/trolling in global chat. If you don't want to get shot while you're farming or building, do it somewhere hidden and don't share your location with people. The map is big enough for you to find a secluded spot to build your safe-house.