Database Anonymization

Privacy Models, Data Utility, and Microaggregation-based Inter-model Connections

Josep Domingo-Ferrer, David Sánchez, Jordi Soria-Comas

• Publisher: Springer
• Year: 2022
• Print ISBN: 9783031012198
• eBook ISBN: 9783031023477
• Topic: Computer Science
• Subtopic: Cyber Security
• Index: Computer Science

The current social and economic context increasingly demands open data to improve scientific research and decision making. However, when published data refer to individual respondents, disclosure risk limitation techniques must be implemented to anonymize the data and guarantee by design the fundamental right to privacy of the subjects the data refer to. Disclosure risk limitation has a long record in the statistical and computer science research communities, who have developed a variety of privacy-preserving solutions for data releases. This Synthesis Lecture provides a comprehensive overview of the fundamentals of privacy in data releases focusing on the computer science perspective. Specifically, we detail the privacy models, anonymization methods, and utility and risk metrics that have been proposed so far in the literature. Besides, as a more advanced topic, we identify and discuss in detail connections between several privacy models (i.e., how to accumulate the privacy guaranteesthey offer to achieve more robust protection and when such guarantees are equivalent or complementary); we also explore the links between anonymization methods and privacy models (how anonymization methods can be used to enforce privacy models and thereby offer ex ante privacy guarantees). These latter topics are relevant to researchers and advanced practitioners, who will gain a deeper understanding on the available data anonymization solutions and the privacy guarantees they can offer.

Table of contents

• Cover
• Title page
• Copyright Page
• Contents
• Preface
• Acknowledgments
• Introduction
• Privacy in Data Releases
• Anonymization Methods for Microdata
• Quantifying Disclosure Risk: Record Linkage
• The k-Anonymity Privacy Model
• Beyond k-Anonymity: l-Diversity and t-Closeness
• t-Closeness Through Microaggregation
• Differential Privacy
• Differential Privacy by Multivariate Microaggregation
• Differential Privacy by Individual Ranking Microaggregation
• Conclusions and Research Directions
• Bibliography
• Authors' Biographies