(New York Review of Books) The recent revelations regarding the NSA's collection of the personal information and the digital activities of millions of people across the world have attracted immense attention and public concern.
But there are equally troubling and equally opaque systems run by advertising, marketing, and data-mining firms that are far less known. Using techniques ranging from supermarket loyalty cards to targeted advertising on Facebook, private companies systematically collect very personal information, from who you are, to what you do, to what you buy. Data about your online and offline behavior are combined, analyzed, and sold to marketers, corporations, governments, and even criminals.
The scope of this collection, aggregation, and brokering of information is similar to, if not larger than, that of the NSA, yet it is almost entirely unregulated and many of the activities of data-mining and digital marketing firms are not publicly known at all.
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