This book explores the essential facets of security threats arising from the globalized IC supply chain. Contemporary semiconductor companies navigate a globalized IC supply chain, exposing them to various threats such as Intellectual Property (IP) piracy, reverse engineering, overproduction, and malicious logic insertion. Several obfuscation techniques, including split manufacturing, design camouflaging, and Logic Locking (LL), have been proposed to counter these threats. This book describes a new security method for the silicon industry, the Tunable Design Obfuscation Technique, which uses a reconfigurability feature in the chip to make it harder to understand and protect it from rogue elements.