I've managed to limit his internet usage to an iPad and a chromebook - but as mentioned above that does little good. He is extremely proud and talking to him is useless. A good chunk of these events come while browsing porn, which he refuses to admit. I feel hopeless and am in the process of separating any financial connections with my mother for fear I'll become a victim. My mother has been saving cash for years to insulate herself (my dad also refuses to write a will - but thats another problem entirely).
I know a major event is coming soon. While I'm fairly certain his porn usage is tame, all it would take is a fake $THAT_ACTRESS_WAS_ACTUALLY_17_WE_WILL_REPORT_TO_FBI email and he could probably be extorted for everything he has. I don't know what to do honestly. This is a real threat to millions of Americans and it seems there is no solution.