137
Instagram will blur nudes in messages sent to minors
(www.theverge.com)
This is a most excellent place for technology news and articles.
If the 17-year-old sends one back, that's already a crime in many places. It could get him prosecuted for production and her for possession. If he uploads the picture to a chat group, the real fun starts.
The article says this is about nudity, not selfies. IDK how kids use instagram, but I'd guess that the senders are mainly kids sharing horny pics from somewhere else.