This requirement deals with the issues associated with establishment of access control mechanisms in distributed (GRID) environment. Depending on requirements of a particular use-case the feedback resulted from this topic can be related to adaptive enforcement systems architectures ( Adaptive enforcement).
The VO level is concerned about problems such as: policy management, authentication and authorization; and also to make them interoperate at the global level. Currently, a severe problem in the various security mechanisms is the absence of the consideration of all the typical parameters of large scale open networked systems.
Among them a particular topic in order to establish a secure context, is the distribution of very sensitive credential cipher materiel in highly distributed and dynamic environment: which entity is in charge of emitting cipher material and credential? Is a trusted third party needed?