Main People Research Publications Donggang's Matt's Classes	Research Areas Security Monitoring using Sensor Networks Wireless sensor networks have tremendous promise for monitoring a region, such as a border or a secured facility. In this project, we are developing comprehensive solutions to make such monitoring effective against powerful, adaptive attackers. This includes defenses against such problems as network jamming attacks, probing and evasive intruders, and wide-scale node compromise. By addressing these issues together, we will be able to create a network architecture that combines our solutions and makes security monitoring with sensor networks an effective and powerful tool. Software Security Testing Anonymous Communications Traffic analysis can expose a great deal about sensitive relationships; anonymous communications system are a promising technology to stop this kind of information leakage. We focus on ways to stop long-term attacks against these systems, as well as the application of anonymity to wireless and ad-hoc networks. Security in sensor networks Wireless sensor networks have great potential, but they can be challenging to secure due to resource constraints and node compromise. Major topics include mechanisms for fundamental security protocols (e.g., key management and broadcast authentication), protection of critical sensor network services (e.g., routing, data management, localization, time synchronization, clustering), and the detection of replicant nodes. Incentives in Security and Privacy Most security problems are posed as black and white issues, but many times, models based on incentives are more approprate. In this work, we find areas in which incentives can be added to systems to enhance their security properties, and we use game-theoretic analysis to understand how incentives play out in existing systems. Research includes incentives for worm detection, anonymous communications, and digitial rights management.