The Facebook account customization craze has been riding high for some time now and weve even got a stream of legitimate apps that promise to embellish virtual socialites houses of pain. How to tell a good Facebook re-decorator from a bad one? Take a look at the details listed in your browser`s tools repository to get a sense of how popular it is. Even with a legitimate app, the most you can achieve is to see your account through the tinted glass of the installed extension.”]
Source: https://www.bitdefender.com/blog/hotforsecurity/turn-blind-eyes-to-remove-timeline-scams/