What is software supply chain security?

It is the set of practices that protect the integrity of dependencies, build processes and software artefacts against tampering. It seeks to ensure that the deployed software matches what was built, with no altered or malicious components at any link.

How is the supply chain protected in practice?

Through signing and verification of artefacts, adoption of frameworks such as SLSA to guarantee build integrity, maintaining an SBOM with the component inventory, and controlling the source of dependencies through managed private repositories.

What do DORA and NIS2 require here?

DORA requires managing the ICT risk of third-party providers and components across the lifecycle. NIS2 incorporates supply chain security as an explicit control for essential entities. Both make this protection a compliance requirement, not an optional best practice.

Glossary · Cybersecurity · Supply chain

Software supply chain security

Software supply chain security protects the integrity of everything that goes into an application: dependencies, build processes and final artefacts. The goal is to ensure that the deployed software is exactly what was built, with no components tampered with or introduced by an attacker at any link in the process.

Common controls

Artefact signing — signing and verifying artefacts ensures they have not been altered between build and deployment.
SLSA — a tiered framework that defines progressive guarantees about the integrity of the build process and the provenance of the artefact.
SBOM — a component inventory that makes it possible to know the dependencies and respond quickly to known vulnerabilities.
Private repositories — controlling the source of dependencies prevents substitution by malicious or impersonated packages.

Why it matters in regulated banking

Supply chain incidents affect multiple organisations at once through a single compromised provider or component. DORA requires financial institutions to manage third-party ICT risk across the lifecycle, and NIS2 establishes supply chain security as an explicit control in essential sectors. Protecting dependencies, builds and artefacts with signatures, SLSA and SBOM turns that regulatory requirement into verifiable technical guarantees about the provenance and integrity of software in production.

How Vermont Solutions helps

End-to-end integrity

We support financial institutions in protecting their software supply chain with signatures, SLSA and SBOM, in line with the requirements of DORA and NIS2.

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Last updated: 2026-06-21. Editorial content by Vermont Solutions, citable with attribution.