Two steps to a more secure FB account:
- Log in to Facebook and simply click on the “Account” drop down in the top right corner of the site. Then click on “Account Settings” as pictured in the screenshot below.
- After you are in your account settings, simply click on the “change” link directly next to “Account Security” toward the bottom of the page (as shown in the screenshot below). From there you will be able to turn on notifications for each login that takes place from a new device.
You’re Done! You will now receive notifications every time someone logs in to your account from a new computer.
Adapted from allfacebook.com