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Julien Freudiger

Julien Freudiger is a security researcher, helping individuals enjoy the better side of communication technology using a combination of economics and security. His interests include security, privacy, wireless networks, and game theory. He is focusing on secure and private big data analytics and security aspects of ubiquitous communications.

During his time at the Ecole Polytechnique Federale de Lausanne (EPFL), Julien investigated location privacy threats and designed protocols for preserving location privacy. He also had internships at Qualcomm R&D, where he was involved in the design of CDMA protocols for VoIP, and at Infineon R&D, where he developed a multi-threaded processor.  

Dr. Freudiger received his Ph.D. in Computer and Communication Systems and a M.Eng. in Communication Systems, both from EPFL

Julien enjoys traveling the world, creative discussions, dancing salsa, and reading books. 


PARC publications

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Privacy Preserving Data Quality Assessment

ACM Workshop on Information Sharing and Collaborative Security (WISCS)

3 November 2014

A comparative usability study of two-factor authentication

Usable Security Workshop (USEC), 2014

23 February 2014




other publications

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Non-Cooperative Location Privacy

IEEE Transactions on Dependable and Secure Computing (TDSC)


Privacy-Triggered Communications in Pervasive Social Networks

IEEE WoWMoM Workshop on Autonomic and Opportunistic Communications (AOC)

The Inconvenient Truth About Web Certificates

Workshop on Economics of Information Security (WEIS)

Evaluating the Privacy Risk of Location-Based Services

Financial Cryptography and Data Security (FC)

Tracking Games in Mobile Networks

Conference on Decision and Game Theory for Security (GameSec)


On Non-Cooperative Location Privacy: A Game-Theoretic Approach

ACM Conference on Computer and Communications Security (CCS)

On the Age of Pseudonyms in Mobile Ad Hoc Networks

IEEE International Conference on Computer Communications (INFOCOM)

A Unified Framework for Location Privacy

Hot Topics in Privacy Enhancing Technologies (HotPETs)

Private Sharing of User Location over Online Social Networks

Hot Topics in Privacy Enhancing Technologies (HotPETs)

Integrity of the Web Content: The Case of Online Advertising

Usenix Workshop on Collaborative Methods for Security and Privacy(CollSec)

SensorTune: A Mobile Auditory Interface for DIY Wireless Sensor Networks

Conference on Human Factors in Computing Systems (CHI)

Unraveling an Old Cloak: k-anonymity for Location Privacy

Workshop on Privacy in the Electronic Society (WPES)


Towards Privacy-Friendly Online Advertising

IEEE Web 2.0 Security and Privacy (W2SP)

On the Optimal Placement of Mix Zones

Privacy Enhancing Technologies Symposium (PETS)

Self-Organized Anonymous Authentication in Mobile Ad Hoc Networks

Conference on Security and Privacy in Communication Networks (SECURECOMM)

A Distortion-based Metric for Location Privacy

Workshop on Privacy in the Electronic Society (WPES)


On Wireless Social Community Networks

IEEE International Conference on Computer Communications (INFOCOM)

Wireless Social Community Networks: A Game-theoretic Analysis

Int. Zurich Seminar on Communications (IZS)


On Spectrum Sharing Games of Network Operators and Cognitive Radios

Cognitive Wireless Networks: Concepts, Methodologies and Visions, F. Fitzek & M. Katz

Mix-Zones for Location Privacy in Vehicular Networks

Workshop on Wireless Networking for Intelligent Transportation Systems (WiN-ITS)




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external websites

Personal website