The most important AntiVirus sits right in the middle between your ears.
I agree, people behave incredibly stupid on the web. Starts with antisocial media already, but certainly does not end there.
I know such telephone calls. Thats why I have whitelisted my telephone.Everybody knows what a blacklist is. A white list is practically a negative. No callers can reach me as long as their individual number or number-area have not been listed in the permission-list. You cannot imagine how peaceful my life has become since then. Before, I got call-centre calls at least once a week, for some weeks 2-4 times per day. Also scam calls once a month or so. It was a pest. I did not like telephoning before, but since then I hate phones. Today, only cellphone networks, and the area of maybe 30km around my hometown can reach me by telephone. Plus people whose individual numbers I have permitted.