On September 28, 2018, Facebook said its engineers discovered a security weakness that could let attackers hijack people’s accounts. It affected the “View As” feature in the profile, where you can see how your friends view your profile. It’s a security feature to help keep your profile private from the public.
There’s nothing much you need to do with your account, since Facebook has reset all those profiles’ access keys. But its always best to be safe as possible.
In a New York Times article, a few tips are provided to help you keep your profile private and secure. But when data breaches like this happen, to keep your identity as protected as possible, you can always rely on an identity theft protection service like the one ID Mentor offers. Find out more about this service here.