Mike Surridge

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Access control is a critical feature of many systems, including networks of services, processes within a computer, and objects within a running process. The security consequences of a particular architecture or access control policy are often difficult to determine, especially where some components are not under our control, where components are created(More)
The move towards supporting more autonomous systems, where decisions are made without direct user intervention, and more complex operating scenarios, where services from multiple organisations form temporary ties to solve particular problems, creates new security challenges. This paper argues that the answers should combine the use of conventional security(More)
Semantic grid is becoming a key enabler for next generation grid and the need of supporting process description and enactment, by means of composition of multiple resources, emerged as one of the fundamental requirements. Within NextGRID project, the idea of adopting business processes (expressed as workflow policies) as architectural components in a next(More)
Grids are becoming economically viable and productive tools. They provide a way of utilizing a vast array of linked resources such as computing systems, databases and services online within Virtual Organizations (VO). However, today’s Grid architectures are not capable of supporting dynamic, agile federation across multiple administrative domains and the(More)
The U.K. National Crystallography Service (NCS) has developed a prototype e-science infrastructure for the provision of a small molecule crystallography service from sample receipt to results dissemination. This paper outlines the two strands of this service, which (a) enable a user to contribute in the conduction of an experiment and (b) provide an(More)
Industrial adoption of cloud computing for collaborative business processes is limited by their ability to meet inter-enterprise security requirements. Although some clouds offerings comply with security standards, no solution today allows businesses to assess security compliance of applications at the business level and dynamically link to security(More)