2. Limit the information Facebook apps can see about you
Another potential intrusion into your privacy comes in the guise of the Facebook app platform. Even if you have all your information locked down, Facebook apps that your friends use can also access information about you.
To stop them, go to your Settings and select Apps. Select Edit next to Apps Others Use. We’d recommend unchecking all the boxes. This prevents Facebook apps from gleaning information from your account under the rationalization of a “better social experience.”
If you don’t use Facebook apps at all, you always have the option to completely turn them off.
1. Stop people “looking you up”
A potential way people can obtain your email address or phone number (if you gave it to Facebook) is to type it into Facebook Search and see what account pops up. This can potentially pair your name with your email or phone number, which we think is a privacy violation. Facebook automatically make this information public, so we recommend changing that.
Back in the Settings section click Privacy and make sure the option about who can look you up through your email and phone number are both set to Friends.
A few other things
– You can stop Facebook showing you ads based on your activity on other websites by going to Settings and clicking Ads. From there you can turn off online interest-based ads from Facebook. Don’t be fooled though, this doesn’t stop Facebook from tracking you elsewhere on the Internet. It just stops them from showing you ads based on that tracking.
– You can review your installed Apps by selecting Apps in your settings to see a list of all installed Apps on your account and what information about you they have access to. Don’t trust any of these apps? Make sure you remove them.
– Check your profile, timeline and mobile photo albums, and check their privacy settings. Old profile pics and timeline pics can often be set to public, so you may need to go into those photo albums and change the visibility of each of these photos to Friends Only.