Role-Based Access Control (RBAC) is the most widely used model for advanced access
control deployed in diverse enterprises of all sizes. RBAC critically depends on defining …

Ubiquitous computing is resulting in a proliferation of cyber-physical systems that host or
manage valuable physical and digital assets. These assets can be harmed by malicious …

The Internet of Things (IoT) is enabling smart houses, where multiple users with complex
social relationships interact with smart devices. This requires sophisticated access control …

Cyber-physical space is a spatial environment that integrates the cyber world and the
physical world, aiming to provide an intelligent environment for users to conduct their day-to …

Access control for information has primarily focused on access statically granted to subjects
by administrators usually in the context of a specific system. Even if mechanisms are …

Insider attacks are among the most dangerous and costly attacks to organizations. These
attacks are carried out by individuals who are legitimately authorized to access the system …

Massive amounts of data are being collected, stored, and analyzed for various business and
marketing purposes. While such data analysis is critical for many applications, it could also …

To combat the threat of information leakage through pervasive access, researchers have
proposed several extensions to the popular role-based access control (RBAC) model. Such …

A Geo-Social Computing System (GSCS) allows users to declare their current locations, and
uses these declared locations to make authorization decisions. Recent years have seen the …

Among the various types of Role-based access control (RBAC) policies proposed in the
literature, contextual policies take into account the user's location and the time at which she …