Data Brokers are the companies that make billions of dollars gathering up, then selling or sharing our data. It’s used for everything from targeted ads (that’s how they knew you drive a Subaru) to spam (and why you get so many bogus phone calls).

And if you’re thinking, “I bet their morals behind all this are pretty questionable,” you’re right. A study from Duke University’s Sanford School of Public Policy found data brokers are selling info on current and former U.S. Military personnel — and dove into just how dangerous that can be.

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