Explore a groundbreaking lecture on building secure systems from insecure components, delivered by Emma Dauterman from UC Berkeley. Delve into the critical issue of weakest-link security in modern computer systems and discover innovative solutions to withstand compromises at modest costs. Learn about a hardened authentication system compatible with most websites and an encrypted backup system that protects against physical attacks while running on legacy hardware. Understand the key concept of tailoring cryptographic tools to specific system settings, optimizing security without overhauling entire infrastructures. Gain insights into how these approaches can protect users and their data, even in the face of vulnerabilities and hardware flaws. This talk offers valuable knowledge for cybersecurity professionals, system architects, and anyone interested in advancing the field of secure computing.