1. Our cellphones are collecting a heck of a lot more information than we expect them to be collecting about us. They are collecting where we are, not just at one particular moment in the day but at virtually every moment of the day - where we move to, how long we stay there. This is location information that they collect and that the cellphone carriers collect and most importantly retain for sometimes quite long periods of time. They are also taking note of what we are buying, how we’re purchasing it, how often we’re purchasing it - that’s just the starting point for very important sensitive things phones take note of, including our text messages.

    — ProPublica investigative reporter Peter Maass on what information cell phone companies collect about us

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