Dr. Jensen holds an M.Sc. in computer science from the University of Copenhagen (Denmark), and a Ph.D. in computer science from Université Joseph Fourier (Grenoble, France). He is an associate professor at the Department of Informatics and Mathematical Modelling at the Technical University of Denmark, where he teaches and conducts research in the area of security in open distributed systems. For the past 10 years, he has focused on trust-based methods and technologies to secure collaboration among entities in open distributed system. This work addresses all 3 As in AAA: Authentication technologies and entity recognition; Access control policies and mechanisms; and Accountability through reputation and recommendation systems. He is currently leading two active projects in the area of trust management: the Wikipedia Recommender System, which develops a reputation mechanism for the Wikipedia and the Secure Wiki Project, which develops a general trust and reputation based access control mechanism to protect open wiki systems from vandalism.
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