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Counteracting Inferences from Sensitive Value Distributions

  • Giovanni Livraga
Part of the Advances in Information Security book series (ADIS, volume 57)

Abstract

At a first sight, excluding sensitive data from the release (i.e., releasing only a collection of non sensitive data), might seem a safe approach for protecting data confidentiality. Unfortunately, the possible correlations and dependencies existing among data can introduce inference channels in the data release process, causing sensitive information to be leaked even if such information is not explicitly released. In this chapter, we consider a scenario where data are incrementally released and we address the privacy problem arising when sensitive and non released information depends on (and can therefore be inferred from) non sensitive released data. We propose a model capturing this inference problem, where sensitive information is characterized by peculiar value distributions of non sensitive released data. We then describe how to counteract possible inferences that an observer can draw by applying different statistical metrics on released data. Finally, we perform an experimental evaluation of our solution, showing its efficacy.

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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • Giovanni Livraga
    • 1
  1. 1.Universita degli Studi di MilanoCremaItaly

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