Since 2007, the UMass Rescue Lab has been the premier computer science research group working to rescue children from Internet-based victimization. The lab develops digital forensics methods, investigation tools, and research on Internet privacy and online harms. Those tools are used by investigators in every U.S. state and in many countries. Thousands of children have been rescued from sexual abuse by investigators using the lab's tools. The lab has never charged for its tools or trainings.