I have been saying for years that technology increasingly requires the development of memetic firewalls - firewalls that don't just filter based on metadata, but filter based on ideas. Our firewalls need to be at least as capable as the entities it seems to keep out (or in).

That sort of firewall is going to be really expensive to run, to the point that it's a financial DOS vulnerability. What is feasible is simpler algorithms that emit alerts on a baseline pattern match, which then get routed to AI observers after some trigger threshold for mitigation. I wouldn't be surprised if someone has already deployed something like that, TBH.