Rational exposure: A game theoretic approach to optimize identity exposure in pervasive computing environments

Authors:
Feng Zhu;Wei Zhu
Affiliations:
Dept. of Computer Science, University of Alabama in Huntsville, USA;Intergraph Corporation, Huntsville, Alabama, USA
Venue:
PERCOM '09 Proceedings of the 2009 IEEE International Conference on Pervasive Computing and Communications
Year:
2009

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Cited 2

Reciprocity attacks

Proceedings of the Seventh Symposium on Usable Privacy and Security
Understanding identity exposure in pervasive computing environments

Pervasive and Mobile Computing

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Abstract

In pervasive computing environments, personal information is expressed in digital forms to a great extent. Daily activities and personal preferences may be easily associated with personal identities. Privacy protection is a serious challenge. The fundamental problem is the lack of a mechanism to help people expose appropriate amounts of their identity information. We propose the Hierarchical Identity model. It expresses one's identity information from precise to general. We model privacy exposure as an extensive game. By finding the subgame perfect equilibria in the games, our approach achieves optimal exposure. It finds the most general identity information that a user wants to expose and a service provider accepts.