Software professionals by security firm Symantec data have discovered a leak on Facebook. This affects the release of certain data requests for Facebook applications. According to Symantec, had a third party - primarily Facebook's advertising clients - access to Facebook profiles, photos, and chats. They had messages on behalf of those affected can send even status.
The reason for the unintentional openness: Carotenoids were transferred to advertisers so-called access tokens of the users. This is basically it for spare keys for full access to profile data of Facebook users, explain the Symantec experts. By April an estimated 100,000 Facebook apps have had this error by access to such access tokens. Every day about 20 million Facebook apps were installed. Since the error also was the introduction of Facebook apps in the year 2007 there is the potential for harm is huge - at least in theory.
For security reason you should immediately change his Facebook password, recommended Nishant Doshi and Candid Wueest. That was about the same as if you replace the lock on his front door - so that the spare key would be useless.