The Internet has facilitated an explosion of trafficking in video and images of child sexual abuse (child pornography). These are, literally, crime-scene photos, and the thriving black market for them can only be supplied one way: through the rape and torture of more children. (Above: law enforcement map showing over 300,000 suspects seen trafficking in child abuse images and video.)
But the same technology used by child predators can be used to find and stop them. Every crime committed in cyberspace leaves a trail that can be followed back through the Internet. And since over half of all child-pornography collectors are hands on offenders, the technology can be used to locate and rescue child victims.