My son would go with a shotgun although he would not encourage anyone to buy a gun in the first place. As an LEO, he doesn’t want everyone to have a gun. Can’t blame him for that in today’s anti-police environment.From what you describe as your situation it would be hard to find a better fit than a shotgun unless it intimidates you. I would normally say #4 buckshot but in your situation heavy turkey loads may be more suitable. Your son should be able to bring you up to speed with his training. What did he suggest? He has a better understanding of your situation, skills and potential capabilities than any cyber adviser.