Date Added: Dec 2011
The authors have seen tremendous growth in Online Social Networks (OSNs) in recent years. These OSNs not only offer attractive means for virtual social interactions and information sharing, but also raise a number of security and privacy issues. Although OSNs allow a single user to govern access to her/his data, they currently do not provide any mechanism to enforce privacy concerns over data associated with multiple users, remaining privacy violations largely un-resolved and leading to the potential disclosure of information that at least one user intended to keep private. In this paper, they propose an approach to enable collaborative privacy management of shared data in OSNs.