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Electronic Frontier Foundation
The leading nonprofit defending
digital privacy, free speech,
and innovation.

The leading nonprofit defending digital privacy, free speech, and innovation.

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How Ad Tech Became Cop Spy Tech

If a company wants to advertise something to you on the internet, it first has to know who you are and what you like to buy. There are many different approaches to gathering this data, but all generally have one goal in common: they link you with the data generated...

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