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 ...

Facebook asks for a user's phone number for a variety of reasons. A phone number can be used to reset a forgotten password; to suggest people you may know so that you can connect with them on Facebook ...

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 ...

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 ...

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 ...

(CNN) -- Facebook is facing criticism for not allowing users to opt out of a feature that lets people look them up using their phone number or email address. This includes users who only added their ...

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 ...

Every Facebook user has a unique ID number. This number gives you some information on approximately -- but not precisely -- when you and your friends joined Facebook relative to each other. A lower ...

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 ...

Facebook is facing criticism for not allowing users to opt out of a feature that lets people look them up using their phone number or email address. This includes users who only added their phone ...