You know those fun little quizzes that turn up on Facebook? The one’s that supposedly determine who your best friend is or who would bail you out of jail?
When you take those quizzes, you’re giving those apps permission to access your Facebook Friends list. That gives the developer a lot of information about you. Now, if it’s a legitimate quiz, there’s no problem. But if it’s one put together by scammers, you’ve just given them a nice list to work with. I’m sure you’ve all heard of people starting fake Facebook accounts and then sending requests to the friends of the person they’re impersonating. Where do you think they get the information as to who those friends are? Lists like that. So think before you give permission for these quizzes to access your information.