The Facebook hack is even worse than was at first clear, the company has admitted.
But it later said that the problem would also affect its "Facebook Login" service, which allows other apps to use people's Facebook account to login.
2/9 Limit old posts Annoyingly, changing this has no effect on who’s able to see your past Facebook posts.
7/9 Clean up your apps You can view a list of all of the apps you’ve connected to your Facebook account by going to Settings and Apps.
If you don’t want to log into websites and apps with your facebook account, scroll down and turn Platform off.
That might include other Facebook apps like Instagram but also third-party ones that use the login service, such as Tinder. »