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laurakalbag : shadow   4

Facebook Is Giving Advertisers Access to Your Shadow Contact Information
“Facebook is not content to use the contact information you willingly put into your Facebook profile for advertising. It is also using contact information you handed over for security purposes and contact information you didn’t hand over at all, but that was collected from other people’s contact books, a hidden layer of details Facebook has about you that I’ve come to call “shadow contact information.”
facebook  shadow  profiling  tracking  ads  advertising  contact  indie  radar 
september 2018 by laurakalbag

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