Every time you use the internet, you leave a huge trail of information in your wake–and it’s not just your browser history full of cat videos. Companies called data brokers are constantly collecting a thousand little nuggets of information behind you, adding them up into a profile of you, and selling the profiles for lots of money. Data brokers still move in mysterious ways, leaving unanswered questions: how are they getting their data? Who’s buying it? And, perhaps most importantly: can you, the consumer, do anything about it?