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CISA Guidelines for Software Supply Chains
What are CISA's software supply chain guidelines?
The CISA Guidelines for Software Supply Chains are a set of best practices, risk management principles, and policy recommendations published by the Cybersecurity and Infrastructure Security Agency (CISA) to help organizations secure their software development lifecycle (SDLC) and defend against supply chain threats.
These guidelines aim to ensure the integrity, transparency, and resilience of software components, whether developed internally or sourced from third parties.
Why listen to CISA?
The growing sophistication of supply chain attacks, such as SolarWinds and Log4Shell, has exposed vulnerabilities in the development, distribution, and consumption of software. CISA’s guidelines provide a foundation for securing the software ecosystem across public and private sectors.
Following these practices helps organizations:
- Comply with Executive Order 14028
- Build more secure software
- Reduce exposure to third-party risks
- Prepare for incident response involving compromised supply chains
How it works
The guidelines are organized into three roles:
- Developers – Secure coding, build hardening, SBOM generation, artifact signing
- Suppliers – Transparency, vulnerability disclosure, secure delivery
- Acquirers – Risk assessment, validation of SBOMs, provenance verification
CISA also encourages alignment with:
- NIST Secure Software Development Framework (SSDF)
- Software Bill of Materials (SBOM) requirements
- Zero Trust Architecture principles
The guidelines provide checklists, maturity models, and tooling recommendations for implementing layered security in CI/CD pipelines and procurement processes.
Benefits
- Reduces Software Supply Chain Risk: Identifies and addresses weak links in development and delivery.
- Enhances Regulatory Preparedness: Aligns with Executive Order 14028, FedRAMP, and upcoming procurement rules.
- Boosts Market Trust: Demonstrates a proactive and transparent security posture to customers and regulators, fostering trust.
- Protects Operational Continuity:Hardens build systems and vendor relationships against disruption or compromise.
CISA guidelines vs
Topic | Focus Area | Key Differences |
|---|---|---|
NIST SSDF | Development practices | CISA builds on NIST and adds procurement, supplier, and acquirer roles |
EO 14028 | U.S. federal policy directive | CISA operationalizes EO 14028 for real-world security implementation |
SLSA Framework | Build pipeline assurance | CISA includes SLSA as one element of its broader guidance |
Best practices for implementing CISA guidelines
- Implement layered access controls in your CI/CD toolchains
- Require SBOMs and signed artifacts from all suppliers
- Conduct third-party software risk reviews during procurement
- Maintain tamper-evident logs of builds and deployments
- Perform threat modeling and vulnerability disclosure planning
Use cases
- Government Vendor Compliance: Meeting software supply chain requirements for federal contracts
- Enterprise SDLC Security: Applying secure build and testing practices organization-wide
- SaaS Procurement Security: Ensuring vendors follow secure development and delivery standards
Additional considerations
- CISA guidance evolves regularly to reflect emerging threats — monitor updates
- Implementation is tiered by maturity, enabling phased adoption
- Success depends on collaboration across dev, security, procurement, and legal teams
- Consider using CISA’s Secure Software Development Fact Sheet and Threat Modeling Resources for implementation
