Explore the challenges and techniques for proving confidentiality in mixed-sensitivity concurrent programs and its preservation under compilation in this 37-minute seminar by Dr. Robert Sison from the University of Melbourne. Delve into the key contributions of his doctoral dissertation, using the seL4 component-based software design of the Cross Domain Desktop Compositor as a case study. Learn about the ongoing collaboration between CIS and UNSW Sydney addressing microarchitectural side-channel vulnerabilities like Spectre. Discover the complexities of ensuring confidentiality in multi-threaded environments with shared resources, and gain insights into program verification, compiler verification, and the challenges of proving operating system security. Examine topics such as implicit flow leaks, conditional branching on secrets, and the development of a generic OS security model for time protection.