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Enabling cross-organizational cooperation in ubiquitous computing environments poses new security challenges that concern particularly the interoperability of security management systems and the security policies of each organization. In this paper, we present a semantic framework for cooperative security management processes design in a cross-organizational context. Our framework is based on a hybrid...
One of the key motivations of policy-based management is flexibility and adaptability to existing infrastructure and change management. In the context of security, modern policy languages such as XACML are extensible and support natively the expression of new information and manipulation operations. However, policy engines, which evaluate users' requests according to policies, may not support this...
End-to-end security in collaborative system has two inferences: the secure delivery of service and the `due usage' of it. The fulfillment of this requirement involves re-thinking the security policy model of collaborative systems. This paper analyses the factors that impact security in such systems. Based on this, a general architecture is proposed with a collaboration-based policy model specified...
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