More than half of 11-15 year old girls using Instagram and Snapchat in the United States have been contacted by strangers in a way that made them feel uncomfortable, according to a report by Common Sense Media, a nonprofit organization that reviews and provides ratings for media and technology in order to safeguard children.

Meanwhile, as Statista's Anna Fleck reports, some 48 percent of teen girls in the U.S. said they had been sent unsolicited messages over a messaging app, as 46 percent were contacted over TikTok and 30 percent on YouTube.