Pakistani teenager Zara Shah was targeted by a stranger while playing a computer game, drawn into a conversation that would expose her to terrifying online sexual exploitation.

Zara, whose name has been changed for safety reasons, is one of an estimated 1.5 million children in Pakistan who experienced online sexual abuse in one year, according to a report published by the U.N. children’s agency this month.

“We started chatting while playing an online game, and he began acting like a friend. Later, he wanted to meet and, after, started asking me for nudes,” 17-year-old Shah said.