Learn to build comprehensive defensive strategies for software supply chain security in this 38-minute conference talk from Nullcon Goa 2025. Explore the critical vulnerabilities that exist throughout the software development lifecycle and discover how to implement multiple layers of protection against supply chain attacks. Understand the various attack vectors that threaten modern software supply chains, from compromised dependencies and malicious packages to build system infiltration and code injection techniques. Examine real-world case studies of supply chain breaches and analyze the defensive mechanisms that could have prevented them. Master the implementation of security controls including dependency scanning, code signing, build environment hardening, and continuous monitoring systems. Discover best practices for vendor risk assessment, third-party component evaluation, and establishing secure development workflows. Gain insights into emerging threats in the supply chain landscape and learn how to create resilient defensive architectures that can adapt to evolving attack methodologies.