In this talk, Dr. Ghosh will present some of the key challenges the Dept. of Defense faces inmobile networking and information assurance. In mobile networking, episodic connectivity, a variety of waveforms, changing topology, and scarce bandwidth presents a number of challengesin mapping currently available commercial technologies to the mobile ad hoc networking environment. Challenges in information assurance include being able to design self-defending networks, robust defenses, situational awareness utilities, self-monitoring, self-evolving software, trust-based dynamic credentialing, and traceback and attribution tools.