A Computer Scientist at USC/ISI (Information Sciences Institute), working on GridSec project in Computer Networks Division. Received Ph.D. in Computer Science at the University of Southern California (USC) in 2002 and M.S. in Computer Science at USC in 1998. Her research interests include Distributed Systems, Computer Networks, Security Policies, Authorization and Access Control. Teaching Advanced Operating Systems (CSci 555) during Fall semesters at USC She is currently a member of GOST group, working on trust negotiation, intrusion detection, distributed authorization, and security policies.