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Technical Note---Assessment of Disclosure Risk When Using Confidentiality via Camouflage

Author

Listed:
  • Han Li

    (Department of Computer Information Systems, Virginia State University, Petersburg, Virginia 23806)

  • Krishnamurty Muralidhar

    (Gatton College of Business and Economics, University of Kentucky, Lexington, Kentucky 40506)

  • Rathindra Sarathy

    (Department of Management Science and Information Systems, Oklahoma State University, Stillwater, Oklahoma 74078)

Abstract

The confidentiality-via-camouflage (CVC) procedure was recently proposed as an alternative to existing procedures such as data perturbation for protecting the confidentiality of numerical data. In this paper, we show that CVC, implemented with certain parameters, could potentially disclose confidential information. We identify the conditions under which such compromise will occur. We provide new derivations for the database administrator to select CVC parameters to avoid such disclosure. We also derive CVC parameters that allow the database administrator to evaluate the trade-off between disclosure risk and data utility, and we provide an expression to evaluate partial value disclosure risk of CVC. Thus, the results of this study should aid the database administrator in evaluating the applicability of CVC.

Suggested Citation

  • Han Li & Krishnamurty Muralidhar & Rathindra Sarathy, 2007. "Technical Note---Assessment of Disclosure Risk When Using Confidentiality via Camouflage," Operations Research, INFORMS, vol. 55(6), pages 1178-1182, December.
    • Handle: RePEc:inm:oropre:v:55:y:2007:i:6:p:1178-1182
    DOI: 10.1287/opre.1070.0426
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    References listed on IDEAS

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    1. Krishnamurty Muralidhar & Dinesh Batra & Peeter J. Kirs, 1995. "Accessibility, Security, and Accuracy in Statistical Databases: The Case for the Multiplicative Fixed Data Perturbation Approach," Management Science, INFORMS, vol. 41(9), pages 1549-1564, September.
    2. Ram Gopal & Robert Garfinkel & Paulo Goes, 2002. "Confidentiality via Camouflage: The CVC Approach to Disclosure Limitation When Answering Queries to Databases," Operations Research, INFORMS, vol. 50(3), pages 501-516, June.
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