Notice some suspicious activity on your wall? Well there some simple security settings built into Facebook – some of these settings are new while others have been around for some time – that should help you quickly detect if any other person is secretly logging into and using your Facebook account.
Go to Facebook.com -> Account -> Account Settings -> Account Security. Here you’ll see a list of all computers and mobile devices that have logged into your Facebook account and when. You can also see the approximate geographic location of the device, based on the IP address, that was used to access your Facebook account.
