Malik Imran Daud

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In online social networks (OSN), users quite usually disclose sensitive information about themselves by publishing messages. At the same time, they are (in many cases) unable to properly manage the access to this sensitive information due to the following issues: i) the rigidness of the access control mechanism implemented by the OSN, and ii) many users(More)
Delegation of access control (i.e. transferring access rights on a resource to another tenant) is crucial to efficiently decentralize the access control management in large and dynamic scenarios. Most of the delegation methods available in the literature are based on the RBAC or ABAC models. However, their applicability can be hampered by: i) the effort(More)
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