You may recently have gotten worried that Facebook has your phone number, even though you don't remember giving it to the social network. At the same time, you may have also realized the social ...

Facebook could have your phone number and email address—even if you never handed them over to the social network. Everyone knows that Facebook collects vast amounts of data. But what many people might ...

If you access Facebook from a mobile device, your phone number may be listed in your friends' contacts list. It's easy to remove your phone number, if you know where to look. If you have been on ...

If you have an old phone number linked to your Facebook account, delete it. Anyone who comes into possession of that number can log into your account sans password, and you won't get so much as a ...

Facebook allows you to list several types of contact information on your profile page, such as your address, email and and instant-messenger screen name. You also have the option of including your ...

If you use two-factor authentication (2FA) to secure your Facebook account, you likely, at some point, gave Facebook your phone number. 2FA adds an almost impenetrable layer of security to your ...

Since about September, Facebook has offered its advertisers a powerful new way to track its users as they surf the Web: It's called "phone number retargeting." (The move comes separately to Facebook's ...

Uploads from iPhones using the Facebook app will push all your contacts onto Facebook's servers - where they'll be matched against any and everyone. Worried at all? Update: Or how about a random ...

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 ...

An online tool lets customers pay to unmask the phone numbers of Facebook users that liked a specific Page, and the underlying dataset appears to be separate from the 500 million account database that ...