I only spread bitcoin to people who are closest to me. I teach them to invest in bitcoin and tell them not to panic when the bitcoin price drops because if you panic when the bitcoin price goes down, bitcoin will take ussell at a low price that's what I teach them.
This is the best thing to do if you want to prevent being attacked by an anonymous person and the faster way I spread BTC to people around me is by wearing my Bitcoin shirt when i see someone that asks me about the cloth or logo I seized the moment tell them about Bitcoin.