Data firm tied to Trump campaign harvested data from millions of Facebook users: report

A data firm hired to support President Donald Trump’s 2016 election campaign harvested private information from 50 million Facebook users without their permission, the New York Times and the Observer of London reported Saturday.

The newspapers, citing former employees of Cambridge Analytica, associates of the firm, and documents, described the harvesting effort as the largest data breach in Facebook’s history.

The New York Times said Cambridge Analytica was able to exploit the social media activity of a swath of the American electorate, developing techniques that was central to its work for the Trump campaign in 2016.

In a blog post late Friday, Facebook FB, +0.67% Deputy General Counsel Paul Grewal said the company had suspended Cambridge Analytica and parent firm Strategic Communications Laboratories for policy violations.

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