Facebook is testing a new feature that will prevent strangers from grabbing or sharing your profile picture. They’re currently testing it out in India but should arrive to other countries soon.
Users in India should see an option to “Turn On Profile Picture Guard”. With it activated, strangers will no longer be able to grab your picture, even using the screenshot method on Android. Also, strangers will not be able to tag themselves or others on your profile photos. A user who has activated his or her Profile Picture Guard will have a blue border around his or her photo and a small shield icon.