Behind the screen, a battle is raging. You can’t see it. You may not even know it’s taking place. That’s the point. The Internet Watch Foundation works hard to make sure you never see some of the worst images of children being sexually abused. Every day, they see these videos, and they fight to get them taken down, and they work with governments, businesses, and law enforcement all around the world to make sure criminals have no place to hide. But could things be about to get worse? In this episode of Pixels from a Crime Scene, we explore what tech companies are doing in the global battle against child sexual abuse material, and how new online encryption could expose millions more to some of the worst material on the internet.