Modern software systems are no longer built entirely from internally written code. Applications today depend on open-source libraries, third-party APIs, container images, cloud platforms, CI/CD pipelines, package managers, and external development tools. While this interconnected ecosystem accelerates development speed, it also introduces one of the most dangerous cybersecurity risks in modern engineering: supply chain attacks. A supply chain attack occurs when attackers compromise a trusted component or dependency within the software delivery pipeline instead of targeting the final application directly. Rather than attacking organizations individually, adversaries exploit upstream systems such as software vendors, package repositories, build infrastructure, or dependency chains. Once compromised, malicious code propagates downstream into multiple organizations simultaneously, dramatically increasing attack scale and impact.…