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Step by step 1. Open Facebook and sign into your account. 2. Click on your profile picture in the upper righthand corner and select "Settings." 3. Click on the "Privacy" tab and select "Apps and Websites." Here you will find a list of all the apps and websites you've authorized to access your personal information. Remove any apps or websites that you no longer use or trust by clicking on the "Remove" button next to their name. 4. After you've removed any unwanted apps or websites you can reauthorize those you do use by clicking on them and selecting "Allow."