The document, Voluntary Principles to Counter Online Child Sexual Exploitation and Abuse, includes 11 principles. It covers themes like targeting online grooming, preventing searches of child sexual abuse material and responding to evolving threats. According to a statement published by the DOJ, the principles are "intended to have sufficient flexibility to ensure effective implementation."

"We hope the Voluntary Principles will spur collective action on the part of industry to stop one of the most horrendous crimes impacting some of the most vulnerable members of society," said US Attorney General William Barr.

Many tech companies already have at least some measures to combat child exploitation. Recently, Facebook made its algorithms for flagging harmful photos and videos open-source and available on GitHub. Microsoft has shared its tool for reviewing chat-based conversations and detecting online grooming. Still, online child exploitation is a widespread and devastating problem.