Security Tag Fields and Control Flow Management

Cybersecurity community now faces advanced threats: Rowhammer, Spectre, Meltdown, Foreshadow, PortSmash, and future unknown threats. Current cybersecurity threats have led to a renewed interest in security tag fields and program control flow. Security tag fields have their roots in 1950's era hardware for system reliability. Today, there is great interest in tags for hardware-based cybersecurity. Current commodity microprocessors execute instructions. Future cybersecurity architectures need to understand and manage security. We investigate using security tag fields to enforce some control flow properties.