Yeah there may be situations like you forgot
to
logout from a public comp or elctricity cut off
If so there is a chance that someone misuses
your
FaceBook Account.So lets see what to do
in these situations
Steps:
Log in to Facebook from Home Computer
Click Account Settings -> Security
Click Edit button near to Active Sessions
You can see the Active Sessions
End all Sessions by clicking End Activity
ho
now Your Account Is Safe