03/22/2018
Regarding the current news about the Cambridge Analytica Facebook user data breach, FB Purity was warning its users about the problem with Facebook applications stealing their data back in 2010! (see: https://www.facebook.com/notes/fluff-busting-fb-purity/important-facebook-privacy-issue-your-friends-applications-and-their-developers-/10150156651570171/ )
If you value your privacy and still want or need to use Facebook. Here's a list of some of the things you can do to protect it:
1) Ditch the Facebook (and Messenger and any other Facebook owned apps, Instagram, Whatsappp etc) mobile phone apps, they basically have complete access to anything you do on your phone, and tracks everything you do, suck up all your contact info, tracks you with GPS etc etc. Its safer to use the mobile website versions of those sites sucha as http://m.facebook.com in your mobile's web browser.
2) When browsing Facebook on a desktop web browser make sure you have a tracker blocking browser extension such as Disconnect , Privacy Badger or Ghostery installed, as this will stop Facebook tracking all the websites you visit in your web browser. The way Facebook tracks which sites you visit is via the ubiquitous "like" button widgets that website owners include in their web pages. Facebook even tracks non Facebook users in this way and creates what are known as "shadow" profiles.
3) Never use the "Facebook" sign-in method to login to other websites. Those websites get access to some of your Facebook data when you do this.
4) To make sure Facebook applications by third parties cannot access any of your or your friends data, turn off the "Facebook Platform" in Facebook's settings on the following page: https://www.facebook.com/settings?tab=applications§ion=all
To do this, go to the section titled
"Apps, Websites and Plugins" , click Edit and then change the setting to disable "Facebook Platform"
5) If you don't want to completely turn off the "Facebook Platform" as you still want to use certain Facebook applications or Facebook sign-in, you should go through the "App settings" at https://www.facebook.com/settings?tab=applications§ion=all and remove any Facebook apps that you no longer use, and also go to the section titled "Apps others use" and untick all the boxes there (This will stop apps your friends use from getting your data even if you yourself are not using the apps)
6) Review and edit your Facebook privacy settings at https://www.facebook.com/settings/?tab=privacy§ion=applications&field=instant_personalization&hc_location=ufi
7) Review the advertising profile Facebook has built for you at https://www.facebook.com/ads/preferences/?entry_product=ad_settings_screen ( the F.B. Purity browser add-on lets you easily delete the list of Interests and Advertisers Facebook has generated for you) Its also worth reviewing the other settings on that page, such as the "ads based on your usage of websites and apps" setting, which basically means you will be shown ads related to websites you have visited, also important is the "ads with your social actions" setting, that basically means if any page you have "liked" creates a Sponsored ad on Facebook they can use your name at the top of their ad to endorse their Advert.
8) This is an extreme one and against Facebook's terms and conditions but its better not to include any of your real information on Facebook, better to put fake information in there, including your name and address, birth date etc.
Of course if you really value your privacy the best thing is to stop using Facebook altogether, delete all the data on your Facebook account and then delete your account, though I don't think it will stop Facebook from keeping a "shadow" profile on you, and who knows if they really ever delete your data, there was certainly some news articles in the past on just that topic where Facebook was holding on to data it shouldn't have been.
What do you think of this list? Got any other Facebook privacy tips you would like to share, add them in the comments!