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Photo sharing is an attractive feature which popularizes online social networks (OSNs). Unfortunately, it may leak users’ privacy if they are allowed to post, comment, and tag a photo freely. In this paper, we attempt to address this issue and study the scenario when a user shares a photo containing individuals other than himself/herself (termed co-photo for short). To prevent possible privacy leakage...
With tremendous growth in Online Social Networks(OSNs), users are used to sharing their photos about daily life in OSNs, that makes social sharing much convenient. Unfortunately, users enjoy these benefit at the cost of confronting privacy issues. A shared photo should be controlled by all users in it to avoid unauthorized access. In this paper, we propose a fine-grained multiparty access control...
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