Facebook login to 3rd party, how much data do you give away?
Do you have a Facebook account and have you used it to login to other sites than Facebook?
Do you know how much data you give away about yourself by using the Facebook login?
You can test by using this page. This page requires you to accept logging in to the Jory web-application using your Facebook account. The application doesn’t require any extra permission, just the permission to accept the login.
The page will examine all the data that is available and display them in a table format. It will also extract information about your friends and display your friends in an image grid view format. You can mouse-over your friends and it will show you the names of your friends.
You can adjust your Facebook privacy settings and test again to see if you want to know whether you show too much private data about yourself.