Facebook just rolled out https:…I would highly suggest everyone switch over to this. Especially if you are using Facebook over unsecure WiFi networks.
1. Login to your Facebook account.
2. On the upper-right side of your profile, click the Account link.
3. From the drop down menu, select Account Settings.
4. Under Account Security, click the Change link.
5. You should be now able to see the Account Security Section.
6. Tick the Browse Facebook on a secure connection (https) whenever possible checkbox.
7. Click Save.
8. Next time you will login to your Facebook profile you should get the secure SSL webpage. To check if you have got such security page, simply have a look the your browser Web address field. If the Facebook webpage contains HTTPS your connection will be secure!
As opposed to HTTP URLs that begin with “http://” and use port 80 by default, HTTPS URLs begin with “https://” and use port 443 by default. HTTP is unsecured and is subject to man-in-the-middle and eavesdropping attacks, which can let attackers gain access to website accounts and sensitive information. HTTPS is designed to withstand such attacks and is considered secure against such attacks (with the exception of older deprecated versions of SSL).
HTTPS connections are often used for payment transactions on the World Wide Web and for sensitive transactions in corporate information systems.