I work in the areas of security, privacy, and forensics applied to the Internet and cellular networks. My research projects are currently funded by the NSF, the Department of Justice, and Operation Underground Railroad. We work in collaboration with the Internet Crimes Against Children Task Force, through which my group's work has had an international impact, including the rescue by law enforcement of more than 350 children from sexual abuse based on our tools. In the networking area, my work includes mobile networking, disruption tolerant networks, and peer-to-peer networking. My work on mobile networking has been funded by the NSF, NSF/GENI, and DARPA.
I am the founding Director of the UMass Amherst Cybersecurity Institute.