Dynamic Administrative Coalitions with WebComDAC

User authorisation is traditionally coordinated by system administrators processing delegation requests. This overhead influences an enterprise's ability to respond efficiently and contributes to the total cost of ownership. We propose to reduce this bottleneck by supporting Dynamic Administrative Coalitions of ordinary users that hold administrative powers reflecting their authority. These coalitions support delegation and on-the-fly creation of new administrative coalitions constrained by business workflow rules. This paper describes a distributed system that integrates security and workflow to manage interoperable middleware security policies; providing a decentralised security administration architecture that is survivable against network and system failures.