Securing Software Supply Chains with SBOM and Attestations

In recent years, the software supply chain has become a primary target for sophisticated nation-state actors and cybercriminal groups. Attacks like SolarWinds and Log4j have demonstrated that even the most secure internal environments are vulnerable to the dependencies they inherit. In 2025, 'Security-by-Design' is no longer sufficient; enterprises must adopt 'Security-by-Verification.' This involves the mandatory use of **Software Bill of Materials (SBOM)** and **Attestations** to verify the integrity of every component in the software stack. At All IT Solutions, we're helping our B2B clients implement these cryptographic verification layers into their automated delivery pipelines.

Securing the supply chain is a technical challenge that spans the entire software development lifecycle (SDLC). This guide explores the tools and frameworks required to build a transparent and verifiable software ecosystem.

SBOM: Creating a Transparent Inventory

An **SBOM** is a formal, machine-readable record containing the details and supply chain relationships of various components used in building software. Think of it as an 'ingredients list' for your software. In 2025, generating an SBOM is a mandatory step in the build process, enabling organizations to quickly identify and respond to new vulnerabilities in their third-party dependencies.

Technical implementation involves using tools like Syft or Trivy to generate SBOMs in standard formats such as CycloneDX or SPDX. These files are then stored alongside the container image or binary, providing a persistent record of the software's composition. At All IT Solutions Services, we integrate SBOM generation into your CI/CD pipelines, ensuring that every release is accompanied by a verifiable manifest. This allows your security teams to perform automated vulnerability scans against a known set of components, significantly reducing the typical 'time-to-identification' for new threats.

Attestations: Cryptographic Proof of Integrity

While an SBOM tells you what's in your software, **Attestations** provide cryptographic proof of how and where it was built. An attestation is a signed statement that a specific action was performed—for example, that the code was scanned for vulnerabilities, that the build was performed on a hardened runner, or that the final artifact matches the source code.

We leverage the **in-toto** framework to define and verify these attestations across the supply chain. By using tools like Cosign, we can sign artifacts and their associated attestations, creating a chain of custody that is virtually impossible to tamper with. This ensures that only verified, 'clean' artifacts are allowed to move forward to the production environment. At All IT Solutions, we specialize in configuring these 'Admission Controllers' within Kubernetes, automatically blocking any container image that does not have the required signatures and attestations. Visit All IT Solutions Services to learn more about our secure deployment patterns.

Achieving SLSA Compliance: A Framework for Supply Chain Integrity

Supply-chain Levels for Software Artifacts (**SLSA**, pronounced 'salsa') is a security framework, a check-list of standards and controls to prevent tampering, improve integrity, and secure packages and infrastructure. We guide our clients through the SLSA levels, from basic build tracking to fully isolated, hermetic build environments.

Conclusion: Building a Culture of Verifiable Trust

Securing the software supply chain is an ongoing effort that requires both technical rigor and cultural change. By implementing SBOMs and attestations, you can move away from 'implicit trust' toward a model of continuous verification. Contact All IT Solutions today to start your supply chain security audit. Our senior security architects are ready to help you navigate the SLSA framework and protect your organization from the threats of tomorrow. Together, we can build a software ecosystem that is truly secure and transparent.