But whether they have to type it into Facebooks search bar or into their phone contacts, the result is the same: others can use your phone number to find your Facebook profile.
Now, since Facebook started requiring page administrators to enable 2FA last summer, its safe to assume that more people have started using the security feature and noticing how Facebook mismanages it.
In response to a tweet from a Page administrator pointing out this critical problem, Facebook has been forced to respond to user concerns and media reports.
When asked specifically if Facebook will allow users to users to opt-out of the setting, Facebook said it wont comment on future plans.
In defiance of user expectations and security best practices, it is exposing users 2FA phone numbers not only to advertisers but also to, well, anyone.
Original article