Cass R. Sunstein, Columnist

Cambridge Analytica Behaved Appallingly. Don't Overreact.

Authorized use of data still has the power to do tremendous good.
Photographer: David Paul Morris/Bloomberg
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The horrendous actions by Cambridge Analytica, a voter profiling company, and Aleksander Kogan, a Russian-American researcher, raise serious questions about privacy, social media, democracy and fraud.

Amidst the justified furor, one temptation should be firmly resisted: for public and private institutions to lock their data down, blocking researchers and developers from providing the many benefits that it promises – for health, safety, and democracy itself.