On the leakage of personally identifiable information via online social networks

  • Authors:
  • Balachander Krishnamurthy;Craig E. Wills

  • Affiliations:
  • AT&T Labs - Research, Florham Park, NJ, USA;Worcester Polytechnic Institute, Worcester, MA, USA

  • Venue:
  • Proceedings of the 2nd ACM workshop on Online social networks
  • Year:
  • 2009

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Abstract

For purposes of this paper, we define "Personally identifiable information" (PII) as information which can be used to distinguish or trace an individual's identity either alone or when combined with other information that is linkable to a specific individual. The popularity of Online Social Networks (OSN) has accelerated the appearance of vast amounts of personal information on the Internet. Our research shows that it is possible for third-parties to link PII, which is leaked via OSNs, with user actions both within OSN sites and else-where on non-OSN sites. We refer to this ability to link PII and combine it with other information as "leakage". We have identified multiple ways by which such leakage occurs and discuss measures to prevent it.