IoT Security: The Perils and Protections of the Root of Trust

Cyberattacks targeting critical infrastructure have surged in recent years, with the security of Internet of Things (IoT) devices a major concern. This article explores two approaches to securing IoT: basic cybersecurity hygiene and defense in depth. Basic hygiene includes strong passwords, regular software updates, update validation, and understanding the software supply chain. Defense in depth emphasizes layered security mechanisms, including protect (layered architecture with integrity checks at each level), detect (using remote attestation technologies like Trusted Platform Modules (TPMs)), and remediate (self-testing and resetting). The article highlights the Root of Trust (RoT) as the cornerstone of secure systems, requiring careful protection. As hardware vendors integrate high-security mechanisms into embedded chips, securing IoT devices is becoming increasingly feasible.