There's been a lot of recent reports on how much information Facebook really has on you and it is scary. When is the last time you looked to see how many of your apps are connected to your Facebook profile? Even if youre not using the app anymore, once you grant them permission to your Facebook profile they will continue to collect your data, including your friends list, pictures, browsing history etc, until you revoke their access.
We found a really good article on CNBC that gives you a step-by-step guide on how to check your privacy settings, see who has access to your information and how to remove them. Follow the link below to check it out.
https://www.cnbc.com/2018/03/20/how-to-see-which-facebook-apps-have-access-to-your-data.html