The amount of private information in the Internet is constantly increasing with the explosive growth of cloud computing and social networks. XACML is one of the most important standards for specifying access control policies for web services. The number ...

SaaS technology might comprise of a bundle of different services provided by different entities. Thus monolithic access policies are not feasible as each of the service partners and the companies using the service would have to provide their internal ...

Personalization of service delivery is an important means for the telecommunication industry of keeping their customers in spite of their market becoming more open to other players. Personalization involves using user-specific, dynamic information about ...

Personalization of service delivery is an important means for the telecommunication industry of keeping their customers in spite of their market becoming more open to other players. Personalization involves using user-specific, dynamic information about ...

The success of future NGN services depends on the ability to adapt and personalize service delivery according to the user's context as well as service and device capabilities. Personalization includes not only respecting explicit user preferences, but ...

In large organizations the administration of access privileges (such as the assignment of access rights to a user in a particular role) is handled cooperatively through distributed administrators in various different capacities. A quorum may be ...

In the era of Ubiquitous Computing and world-wide data transfer mobility, as an innovative aspect of professional activities, imposes new andcomplex problems of mobile and distributed access to information,services, and on--line negotiations for this ...

In large organizations the administration of access privileges (such as the assignment of an access right to a user in a particular role) is handled cooperatively through distributed administrators in various different capacities. A quorum may be ...

There are three major drawbacks of a centralized security administration in distributed systems: It creates a bottleneck for request handling, it tends to enforce homogeneous security structures in heterogeneous user groups and organizations, and it is ...