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Towards security in multi-agency clinical information services

There is no doubt that the privacy of individuals, the confidentiality of information about them, the integrity of transaction holding and the availability of service systems are all essential; threats in any one of these aspects is costly and could lead to disaster. Securing computer services has been considered a core part of any new development, one of which is clinical information systems. In this paper we discuss a security policy model for a clinical information system and investigate whether logical languages can represent the principles of this kind of model. We have used three logical security languages: the Authorization Specification Language (ASL), a Language for Security Constraints on Objects (LaSCO) and Ponder: a Language for Specifying Security and Management Policies for Distributed Systems. We will also study whether these principles are sufficient to deal with the case of multi-agency services and sharing information with different agencies such as social services, police and education authority.