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  • Facebook could be breaking EU law by using shadow data for ads

    Fast Company - 10/01/2018

    On Wednesday, Gizmodo reporter Kashmir Hill wrote that she successfully targeted an ad to Northeastern University computer science professor Alan Mislove using his office landline number, which he never provided to Facebook. Facebook and Instagram allow advertisers to upload lists of phone numbers or email addresses to target with ads as part of its “custom audiences” feature; the social network can then match those to data it has already collected to pinpoint the correct user.

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