Photo Privacy and Rule Based Access Control for Social Networks?

Online social networks (OSNs) have experienced tremendous growth in recent years and become a de facto portal for hundreds of millions of Internet users. These OSNs offer attractive means for digital social interactions and information sharing, but also raise a number of security and privacy issues. While OSNs allow users to restrict access to shared data, they currently do not provide any mechanism to enforce privacy concerns over data associated with multiple users. To this end, we propose an approach to enable the protection of shared data associated with multiple users in OSNs. We formulate an access control model to capture the essence of multiparty authorization requirements, along with a multiparty policy specification scheme and a policy enforcement mechanism. Besides, we present a logical representation of our access control model which allows us to leverage the features of existing logic solvers to perform various analysis tasks on our model, we introduced admin in OSNs, Admin is one who validates, processes and confirms the incoming data into OSNs, i.e., posting and uploading any data into OSNs fully depends on Admin. Security and Privacy for data incoming is increased by giving access permissions like public, private,etc., data coming into OSNs do not affect others people(users) privacy and security. By this Control Mechanism, security is increased and general, sensitive issues are not raised in public (people) through OSNs. Therefore, OSNs will not pollute to true users and polluted by unauthorized users. Hence OSNs will be secure and safest.