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http://ssrn.com/abstract=1450006
 
 

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Broken Promises of Privacy: Responding to the Surprising Failure of Anonymization


Paul Ohm


University of Colorado Law School

August 13, 2009

UCLA Law Review, Vol. 57, p. 1701, 2010
U of Colorado Law Legal Studies Research Paper No. 9-12

Abstract:     
Computer scientists have recently undermined our faith in the privacy-protecting power of anonymization, the name for techniques for protecting the privacy of individuals in large databases by deleting information like names and social security numbers. These scientists have demonstrated they can often 'reidentify' or 'deanonymize' individuals hidden in anonymized data with astonishing ease. By understanding this research, we will realize we have made a mistake, labored beneath a fundamental misunderstanding, which has assured us much less privacy than we have assumed. This mistake pervades nearly every information privacy law, regulation, and debate, yet regulators and legal scholars have paid it scant attention. We must respond to the surprising failure of anonymization, and this Article provides the tools to do so.

Number of Pages in PDF File: 77

Keywords: privacy, information privacy, anonymization, reidentification, deidentification, HIPAA, Data Protection Directive

JEL Classification: K1, K1, K13, K2, K23

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Date posted: July 13, 2012  

Suggested Citation

Ohm, Paul, Broken Promises of Privacy: Responding to the Surprising Failure of Anonymization (August 13, 2009). UCLA Law Review, Vol. 57, p. 1701, 2010; U of Colorado Law Legal Studies Research Paper No. 9-12. Available at SSRN: http://ssrn.com/abstract=1450006

Contact Information

Paul Ohm (Contact Author)
University of Colorado Law School ( email )
401 UCB
Boulder, CO 80309
United States
303-492-0384 (Phone)
303-492-1200 (Fax)
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