Visualizing privacy implications of access control policies in social network systems

Authors:
Mohd Anwar;Philip W. L. Fong;Xue-Dong Yang;Howard Hamilton
Affiliations:
Department of Computer Science, University of Calgary, Alberta, Canada;Department of Computer Science, University of Calgary, Alberta, Canada;Department of Computer Science, University of Regina, Saskatchewan, Canada;Department of Computer Science, University of Regina, Saskatchewan, Canada
Venue:
DPM'09/SETOP'09 Proceedings of the 4th international workshop, and Second international conference on Data Privacy Management and Autonomous Spontaneous Security
Year:
2009

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Abstract

We hypothesize that, in a Facebook-style social network system, proper visualization of one's extended neighbourhood could help the user understand the privacy implications of her access control policies. However, an unrestricted view of one's extended neighbourhood may compromise the privacy of others. To address this dilemma, we propose a privacy-enhanced visualization tool, which approximates the extended neighbourhood of a user in such a way that policy assessment can still be conducted in a meaningful manner, while the privacy of other users is preserved.