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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.)
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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.