Give us your mobile# for security and then we’ll let others violate your privacy. 

This is pretty damning: FB wants us to submit our mobile ph# for security purposes; you know, the one where you log in and then they text you another code you have to enter – AKA “2 factor authentication”).

The problem is that once you give your ph#, people can then look you up on Facebook if they know your phone number. And you can’t turn off this “feature”.

You might think this is not big deal, but if you think about all the databases where your phone number may exist, you can imagine all kinds of strangers now able to look you up on Facebook.

Nothing wrong with having a feature to enter your ph# if you specifically want people to be able to look you up, but to make a “security” case to get you to give your ph# and then turn around and use it for lookup purposes it pretty bad, in my opinion.

Users are complaining that the phone number Facebook hassled them to use to secure their account with two-factor authentication has also been associated with their user profile — which anyone can use to “look up” their profile. Worse, Facebook doesn’t give you an option to opt-out. Last year, Facebook was forced to admit that after […]

Source: Facebook won’t let you opt out of its phone number ‘look up’ setting | TechCrunch