If you've ever opened an app and selected the option to "log in with Facebook" instead of creating a new account, chances are that the people or company behind that app know a lot about you.
According to Facebook, each app that you log into will get your gender, networks you belong to, username, your user ID, your full name and your profile picture.
They also get access to your full friends list and any other public information on your profile.
If you've ever taken a quiz or used a glamorous photo filter app, you've probably granted access to a 3rd party.
After following these steps, Josie discovered she had seven 3rd party apps and Dan had 36!
Here's how to see what apps have your data and how to cut them off.
- On desktop or in the mobile app, tap the drop-down menu on the top-right side of Facebook and select "Settings."
- Select the "Apps" option. This is on the left side of the page on desktop. On your cell, simply scroll down the settings page.
- Each app will have permissions options next to it, click the pencil tool to edit or the X to remove it completely.