Supply chain security lessons and best practices

This briefing explains how supply chain attacks exploit trusted vendors, open-source dependencies, and integrations to reach downstream organizations, summarizes common attack paths and five practical lessons, and provides actionable best practices—inventorying dependencies, prioritizing suppliers, applying least privilege, controlling/containing application execution, segmenting vendor access, hardening cloud/SaaS access, and preparing supply-chain-specific response playbooks—to limit blast radius and improve readiness.