The PERFORM Performability Engineering Research Group at the University of Illinois Urbana-Champaign conducted research in the design and validation of dependable and secure networked systems. Such systems often have requirements for high performance, dependability, and security, and these goals may contradict one another. By providing unified methods to validate system performance, dependability, and security during the entire design process, the group developed and applied sound engineering principles to large-scale system design. This website provides an archive of the group’s publications and an overview of past research and members.