Many children have webcams on their mobile phones and iPads now. Primary school children in some schools submit homework online, or will complete it and print it out at home. It's practically impossible to stop them having internet access, so they need early education about online safety and parental oversight of their internet access, including parents having their passwords.
Many children copy dance videos which are sexualised and the dancers are almost naked, so it's normalised and a naive child would not necessarily question what appears to be mutual exchanges via online chat sites. How easy, therefore, for an apparently gorgeous teenager (paedophile), who has appreciated and agreed with everything you say, to groom you into behaving sexually and coercing you further by threatening to post photos of you on the net. They won't because it could lead to them being traced, but children don't know that.
I talk to my adult children about protecting and educating their children about strangers posing as friendly peers online. They probably know more than me, now. It shouldn't just come from parents, though. There should be online warnings, parental blocks on certain words and sites for child safety (yes, limited censorship!), and school education about online protection.