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President's Council of Advisors on Science and Technology, Big Data and Privacy: A Technological Perspective (May 2014) (full-text).


This report details the technical aspects of big data and privacy. The ubiquity of computing and electronic communication technologies has led to the exponential growth of data from both digital and analog sources. New technical abilities to gather, analyze, disseminate, and preserve vast quantities of data raise new concerns about the nature of privacy and the means by which individual privacy might be compromised or protected.

This report begins by exploring the changing nature of privacy as computing technology has advanced and big data has come to the forefront. It proceeds by identifying the sources of these data, the utility of these data — including new data analytics enabled by data mining and data fusion — and the privacy challenges big data poses in a world where technologies for re-identification often outpace privacy-preserving de-identification capabilities, and where it is increasingly hard to identify privacy-sensitive information at the time of its collection.

The report outlines a number of recommendations, including:

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