This year the FBI issued urgent warnings to parents about 764, a global online community where children are manipulated into acts of violence.
With hundreds of investigations under way worldwide, including in Australia, 764 and groups like it are accused of using coercion to turn vulnerable minors into victims and, in some cases, predators.
Nour Haydar speaks to investigations reporter Ariel Bogle about the dangers to children these networks pose
Read more:
Inside the horrifying online network where children coerce others to commit violence and self-harm
FBI opens inquiry into 764, online group that sexually exploits and encourages minors to self-harm