Facebook's new security feature

A day after an "all-hands" meeting, Facebook released a new security feature similar to what you might see on a banking site.

To help keep hackers from accessing users' personal information, the change comes amid rising concerns about privacy and security on the social networking site and its 400 million users worldwide.

The feature allows users to identify "approved" computers and mobile phones that are allowed to access their accounts. If an unauthorized device tries to log in, the user will be notified via e-mail or text message, allowing them to essentially deny access to unwanted visitors.

"We're confident that these new tools and systems will do a lot to prevent unauthorized logins and the nuisance they can cause," Lev Popov, a Facebook software engineer, writes in a company blog post. "As always, though, the first line of defense is you. We need you to help by practicing safe behavior on Facebook and wherever you go online."

Here's a video from CNN about the new feature if you feel like watching something.