Charalampos Katsis
Graduate Student
Graduate Research Assistant
Joined department: Fall 2019
Education
Charalampos Katsis is a Ph.D. candidate in the Department of Computer Science at Purdue University, advised by Professor Elisa Bertino. His research focuses on network security, with an emphasis on zero-trust network architectures and the application of machine learning techniques to enhance network defense mechanisms. At Purdue, he has worked on a range of research problems, including efficient message authentication techniques for named data networks, network security posture analysis, and security awareness and education. Prior to his doctoral studies, he earned a combined bachelor’s and master’s degree with honors from the Department of Information and Communication Systems Engineering at the University of the Aegean, Greece. During his Ph.D. studies, he completed research internships at the Pacific Northwest National Laboratory and Cisco Research.
Selected Publications
Charalampos Katsis, Fabrizio Cicala, Dan Thomsen, Nathan Ringo, and Elisa Bertino. 2021. Can I Reach You? Do I Need To? New Semantics in Security Policy Specification and Testing. In Proceedings of the 26th ACM Symposium on Access Control Models and Technologies (SACMAT '21). Association for Computing Machinery, New York, NY, USA, 165–174. https://doi.org/10.1145/345056...
Charalampos Katsis, Fabrizio Cicala, Dan Thomsen, Nathan Ringo, and Elisa Bertino. 2022. NEUTRON: A Graph-based Pipeline for Zero-trust Network Architectures. In Proceedings of the Twelfth ACM Conference on Data and Application Security and Privacy (CODASPY '22). Association for Computing Machinery, New York, NY, USA, 167–178. https://doi.org/10.1145/350839...
Charalampos Katsis and Elisa Bertino. 2025. ZT-SDN: An ML-Powered Zero-Trust Architecture for Software-Defined Networks. ACM Trans. Priv. Secur. 28, 2, Article 23 (May 2025), 35 pages. https://doi.org/10.1145/371226...