A team from the BBC successfully stole personal information from four Facebook users via a small application like those you can install on the popular website.
Facebook has grown to be a very popular social networking site and one of its interesting feature are small applications that can be games, quizzes, etc. The BBC team programed one such application to mine data aptly named Miner.

Spencer Kelly is a presenter for the BBC show Click and he explained that Miner “in the background, it is collecting personal details, and those of the users’ friends, and e-mailing them out of Facebook, to our inbox When you add an application, unless you say otherwise, it is given access to most of the information in your profile. That includes information you have on your friends even if they think they have tight security settings”

Apparently, Facebook reacted by saying they are always working to secure the site and are monitoring the applications. I guess whatever they are doing is just not cutting it.

Link: BBC Facebook ID Theft Video
Link: Identity “at risk” on Facebook