After a 15-year-old girl went missing in Florida, her mother found her on Pornhub — in 58 sex videos. Sexual assaults on a 14-year-old California girl were posted on Pornhub and were reported to the authorities not by the company but by a classmate who saw the videos. In each case, offenders were arrested for the assaults, but Pornhub escaped responsibility for sharing the videos and profiting from them.

Pornhub is like YouTube in that it allows members of the public to post their own videos. A great majority of the 6.8 million new videos posted on the site each year probably involve consenting adults, but many depict child abuse and nonconsensual violence. Because it’s impossible to be sure whether a youth in a video is 14 or 18, neither Pornhub nor anyone else has a clear idea of how much content is illegal…

“Pornhub became my trafficker,” a woman named Cali told me. She says she was adopted in the United States from China and then trafficked by her adoptive family and forced to appear in pornographic videos beginning when she was 9. Some videos of her being abused ended up on Pornhub and regularly reappear there, she said.

“I’m still getting sold, even though I’m five years out of that life,” Cali said. Now 23, she is studying in a university and hoping to become a lawyer — but those old videos hang over her.