I think the best thing most parents could do is ban the Internet from their own life. I grew up in the 80s and I have watched the evolution of parenting since then. The world is measurably safer today than it was then. Stranger danger is vanishingly rare. What the hell happened? Fear happened. Things like 24 hour cable news accelerated it, and the Internet turbocharged it. We cannot untangle the horrors we are exposed to on the Internet with what real life dangers face us, we conflate them to the detriment of our children.
Maybe our children will figure it out as they become parents. I hope so.
Stranger danger was always rare. It was a media hype-cycle. Child abductions have always predominantly been by family or other close persons.