"Pictures of child sexual abuse have long been produced and shared to satisfy twisted adult obsessions. But it has never been like this: Technology companies reported a record 45 million online photos and videos of the abuse last year. Hany Farid, who worked with Microsoft to develop technology in 2009 for detecting child sexual abuse material, said tech companies had been reluctant for years to dig too deeply. 'The companies knew the house was full of roaches, and they were scared to turn the lights on,' he said. 'And then when they did turn the lights on, it was worse than they thought.'"