We supplied some consultation and custom components to a secure peer-to-peer sharing application. The clients application used a security model that was conceived and developed by ex-military scientists, and required total Windows integration.
Our role was to develop a TCP/IP tunnelling system which integrated into the architecture of the existing sytem. This included some advanced reviewing and debugging of their existing code base. Which allowed us not only deliver on our initial responsibility, but also confirm and supply a solution to a previously un-discovered 'under-the-bonnet' problem in their COM engine.