Encyclopedia of Database Systems

2018 Edition
| Editors: Ling Liu, M. Tamer Özsu

Disclosure Risk

  • Josep Domingo-FerrerEmail author
Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-8265-9_1506


Attribute disclosure; Identity disclosure;Re-identification risk


In the context of statistical disclosure control, disclosure risk can be defined as the risk that a user or an intruder can use the protected dataset V′ to derive confidential information on an individual among those in the original dataset V. This approach to disclosure risk was formulated in Dalenius [1].

Key Points

Disclosure risk can be regarded from two different perspectives, according to Paass [ 2]:
  • 1. Attribute disclosure. Attribute disclosure takes place when an attribute of an individual can be determined more accurately with access to the released statistic than it is possible without access to that statistic.

  • 2. Identity disclosure. Identity disclosure takes place when a record in the protected dataset can be linked with a respondent’s identity. Two main approaches are usually employed for measuring identity disclosure risk: uniqueness and re-identification.
    • 2.1. UniquenessRoughly...

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Recommended Reading

  1. 1.
    Dalenius T. Towards a methodology for statistical disclosure control. Stat Tidskr. 1977;5(429–444):2–1.Google Scholar
  2. 2.
    Paass G. Disclosure risk and disclosure avoidance for microdata. J Bus Econ Stat. 1985;6(4):487–500.Google Scholar
  3. 3.
    Spruill NL. The confidentiality and analytic usefulness of masked business microdata. In: Proceedings of the Section on Survey Research Methods; 1983. p. 602–7.Google Scholar
  4. 4.
    Winkler WE. Re-identification methods for masked microdata. In: Domingo-Ferrer J, Torra V, editors. Privacy in statistical databases, LNCS, vol. 3050. Berlin: Springer; 2004. p. 216–30.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Universitat Rovira i VirgiliTarragonaSpain

Section editors and affiliations

  • Elena Ferrari
    • 1
  1. 1.DiSTAUniv. of InsubriaVareseItaly