  Service-oriented infrastructures pose new challenges in a number of areas,
notably with regard to security and dependability. BT has developed a
combination of innovative security solutions and governance frameworks that can
address these challenges. They include advances in identity federation;
distributed usage and access management; context-aware secure messaging,
routing and transformation; and (security) policy governance for
service-oriented architectures. This paper discusses these developments and the
steps being taken to validate their functionality and performance.
