Wired: Facebook Bug Could Have Let Advertisers Get Your Phone Number

Wired: Facebook Bug Could Have Let Advertisers Get Your Phone Number. “Facebook tells users that giving the company their mobile phone number will help keep their account secure. Until a few weeks ago, however, the social network’s self-service ad-targeting tools could be massaged into revealing a Facebook user’s cellphone number from their email address. The same flaw made it possible to collect phone numbers for Facebook users who had visited a particular webpage.”