Facebook apps may have inadvertently leaked the personal data of millions of Facebook users to third parties such as advertisers, according to the Web security firm Symantec.
Among the information that could have been accessed is data from user profiles, pictures and Facebooks chats between users.
I've never trusted Facebook apps. I think I have only used one or two in the early days but even then clicking that "Allow" button has always felt unsettling. I'm glad I've stayed away.