Kostas Chatzikokolakis

Kostas Chatzikokolakis is an Associate Professor at the Department of Informatics and Telecommunications, University of Athens. He is on leave from CNRS and the Inria team Comète at LIX, École Polytechnique. His research focuses on security and privacy, particularly quantitative information flow, location privacy, differential privacy, probabilistic verification, and concurrency theory.

Education includes a PhD in Computer Science (2007) from École Polytechnique, Paris, with a thesis on probabilistic and information-theoretic approaches to anonymity. He holds a Master's from University Paris VII and a Bachelor's from the National University of Athens.

Research interests span formal methods for privacy, differential privacy mechanisms, and location privacy. Notable contributions include the Geo-Indistinguishability framework and the Location Guard browser extension. He has received the Test of Time Award at CCS 2023, NSA Best Scientific Cybersecurity Paper Award (2015), and the Second SPECIF/Gilles Kahn Prize (2008).

Teaching includes courses on privacy technologies, computer security, and data structures. He has supervised numerous PhD students and led projects like LOGIS (JSPS/Inria), REPAS (ANR), and Privacy-Friendly Services (Microsoft).

Contributions to open-source software include the Location Guard (60k daily users) and libqif, a C++ toolkit for quantitative information flow analysis.