Explore the critical issue of unauthorized hardware substitutions in the supply chain and learn about a proposed solution using electromagnetic (EM) fingerprints in this 32-minute IEEE conference talk. Delve into the problem statement, understand the attackers' sphere of influence, and discover why supply chain attacks are becoming increasingly prevalent. Examine the proposed approach, including observations and design principles, and compare it to existing methods. Gain insights into the system architecture, experimental setup, and evaluation methods used to validate the effectiveness of EM fingerprints in identifying hardware substitutions. Conclude with a discussion on future directions and participate in a Q&A session to further explore this critical topic in cybersecurity and supply chain management.