Chainguard helps federal agencies secure the software supply chain by delivering minimal, hardened container images and secure open source libraries built from source and continuously maintained. Designed to dramatically reduce vulnerabilities and eliminate unnecessary components, Chainguard software components help agencies meet Executive Order 14028, Zero Trust, and SBOM requirements while shrinking exposure to known exploited vulnerabilities. Our secure-by-default approach supports DevSecOps, modern software factories, and operational technology environments with rapid patching and transparent provenance. By reducing remediation workload and saving valuable engineering time, Chainguard enables agencies and mission partners to strengthen security, meet evolving federal and defense industrial base requirements, and do more with constrained resources. Chainguard is the trusted source for federal open source.