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How Peter Thiel’s Palantir tracks American citizens

Peter Thiel at an interview
Peter Thiel sitting at an interview. Photo: Adam Jeffery/CNBC Photo Bank via Getty Images

Palantir, a data-mining company created by Peter Thiel, is aiding government agencies by tracking American citizens using the War on Terror, as detailed in Bloomberg's Businessweek cover story.

How it works: The software analyzes items such as financial documents, cellphone records, social media posts and reservations to find connections human analysts may miss.