Secure workflow deployment in multi-organizational environments

National audienceWorkfow Management Systems (WFMS) are concerned with the control and coordination of operational business processes, called workflows. When workflow technology is deployed in domains where processes have simple coordinative requirements, the flow of control and data may be easily mapped onto process effectiveness. With the diversity of resources, subjects and activities in the system, ensuring a secure execution environment of the workflow becomes a critical issue. In this paper, we are interested in deploying a WFMS security policy. We investigate this issue either within intra or inter organizational workflows. The later case is more complex and requires more sophisticated control since it includes communications between different organizations