Every day there are fake (CLONED) accounts being created… if you get a friend request from someone you normally would think is already your friend likely they have been cloned.
Hacking is actually more rare – cloning is easy as they do not need to get into your account to do it. they can simply download a couple of pics – which are required to be public – like your profile pic and your fb cover pic – required to be public.
Here is a video of how to deal to show what to do with the ‘fake – cloned’ account. Questions post them below and I will get back to you.