Attribute-based access control (ABAC) is a promising alternative to traditional models of
access control (ie, discretionary access control (DAC), mandatory access control (MAC), and …

The integration of the physical world and the cyber system in IoT brings significant
challenges to the design of security solutions. Access control is considered to be a critical …

User-to-user (U2U) relationship-based access control has become the most prevalent
approach for modeling access control in online social networks (OSNs), where authorization …

The rise in popularity of Internet of Things (IoT) devices has opened doors for privacy and
security breaches in Cyber-Physical systems like smart homes, smart vehicles, and smart …

Users and resources in online social networks (OSNs) are interconnected via various types
of relationships. In particular, user-to-user relationships form the basis of the OSN structure …

Traditional authorization policies are user-centric, in the sense that authorization is defined,
ultimately, in terms of user identities. We believe that this user-centric approach is …

Social networking services (SNSs) such as Facebook and Twitter have experienced
explosive growth during the few past years. Millions of users have created their profiles on …

Cyber Threat sharing helps with defending against cyber attacks in a timely manner. Many
frameworks have been proposed for CTI sharing such as Structured Threat Information …

Traditionally, access control solutions have focused on how to utilize a specific type of
decision parameter for access control decisions. While these “decision parameter”-focused …

The enormous success and diffusion that online social networks (OSNs) are encountering
nowadays is vastly apparent. Users' social interactions now occur using online social media …