Facebook says advertisers can't see identifying information about the users they target. But a new study reveals how a set of clever ad buys could have revealed users' phone numbers, email addresses, and other personal information—no hacking involved. Facebook's advertising tools let buyers reach highly targeted demographics. ....
https://www.thedailybeast.com/facebook-flaw-could-have-exposed-users-personal-info-to-advertisersor-russian-trolls
https://www.thedailybeast.com/facebook-flaw-could-have-exposed-users-personal-info-to-advertisersor-russian-trolls
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