As Facebook continues to grow in popularity the potential for your personal data to be compromised is ever-increasing. What many Facebook users may not realize is that when you access Facebook through a network connection that other people share (such as in a coffee shop or at an airport) there is the potential that nefarious people can intercept your login information, access your Facebook account, and view the private data you have shared there. This security hole was made particularly glaring with the release of Firesheep, a browser add-on to Firefox that specifically allows even unskilled, would-be hackers to steal the login information of other users on a wi-fi network.
Facebook has responded by providing the option for a secure connection known as HTTPS that makes it significantly harder for people to intercept your information as it is being sent back and forth. To enable this feature, access your Account Settings page and under Account Security, choose Browse Facebook on a secure connection (https) whenever possible.
