[bezbac]

Now I got you. I guess "keep children safe" here means two things.

1. Protecting them from grooming 2. Stopping CSAM from being spread via Facebook Messanger

It's evident that E2E encryption likely doesn't make much of a difference regarding the second point, given that many messengers have already implemented E2E encryption.

So, assuming the communication of the NCA was perfectly sincere, the loss here would be mostly the inability to prevent grooming properly. In this case, I think the question we should be asking ourselves is whether children need to be on these platforms at all. We're seeing so many issues linked to the phone use of children that regardless of protecting them from sexual abuse and exploitation, they should probably just be using phones less.

[zaphar]

This is I think a much more effective line of communication. I would also suggest that investing in creating communities where parents are much more involved in their children's activities is also a really effective mitigation. Much of our current communities seem to be trending in a direction where children are isolated and alienated making them much richer targets. Creating communities where the environment is much less target rich for those who would prey on them would I think be a good step. Also making it a community where children are more likely to report the predator would go a long way toward identifying and removing the predator from those communities.