Secure Composition of Systems and Policies

Compositional security is a recognized central scientific challenge for trustworthy computing. Contemporary systems are built up from smaller components. However, even if each component is secure in isolation, the composed system may not achieve the desired end-to-end security property: an adversary may exploit complex interactions between components to compromise security. Such attacks have shown up in the wild in many different settings, including web browsers and infrastructure, network protocols and infrastructure, and application and systems software.