A marketing stunt for the upcoming Ubisoft game Watch Dogs is inadvertently allowing users to check how well theyve set up their Facebook privacy settings. The campaign called Digital Shadow requests permission to access a users account and then pulls information to build a comprehensive dossier of the user as if he or she were an assassins target. And we do mean comprehensive. They know me too well. Digital Shadow first shows users the photos theyve tagged as public, then it moves on to examine their friends. …