Data degradation: making private data less sensitive over time

Authors:
Nicolas Anciaux;Luc Bouganim;Harold van Heerde;Philippe Pucheral;Peter M.G. Apers
Affiliations:
INRIA Rocquencourt, Le Chesnay, France;INRIA Rocquencourt, Le Chesnay, France;University of Twente, Enschede, Netherlands;INRIA Rocquencourt, Le Chesnay, and University of Versailles, Versailles, France;University of Twente, Enschede, Netherlands
Venue:
Proceedings of the 17th ACM conference on Information and knowledge management
Year:
2008

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Abstract

Trail disclosure is the leakage of privacy sensitive data, resulting from negligence, attack or abusive scrutinization or usage of personal digital trails. To prevent trail disclosure, data degradation is proposed as an alternative to the limited retention principle. Data degradation is based on the assumption that long lasting purposes can often be satisfied with a less accurate, and therefore less sensi-tive, version of the data. Data will be progressively degraded such that it still serves application purposes, while decreasing accuracy and thus privacy sensitivity.