Supply Chain Security 2026: How Companies Can Protect Their Software Supply Chain

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By 2026, software supply chains will be one of the biggest entry points for cyberattacks. Log4Shell, SolarWinds, and MOVEit have shown: organizations that fail to vet their suppliers risk their own security. Here’s how companies can safeguard their software supply chain.

TL;DR

Supply chain attacks rose by 78 percent in 2025 compared to the previous year
A single compromised open-source package can simultaneously impact thousands of companies
The NIS2 Directive requires organizations to secure their entire supply chain
Software Bill of Materials (SBOM) is becoming a mandatory document
Automated dependency scans and signature verification significantly reduce risk

62 %

of cyberattacks in 2024 exploited the software supply chain as an entry point

Source: Sonatype State of the Software Supply Chain, 2024

Why Supply Chain Security Is So Critical in 2026

The attack surface of modern software is growing exponentially. On average, enterprise applications consist of 80 percent open-source components. Each of these components can be compromised – and with it, every downstream system. The 2024 XZ-Utils incident dramatically illustrated how a single maintainer could have compromised one of the most widely used Linux libraries.

At the same time, NIS2 is tightening requirements: organizations in critical sectors must now demonstrate not only that they secure their own systems, but also that they systematically assess the security of their suppliers and software supply chains.

“Supply chain security is no longer an optional add-on. If you don’t know your dependencies, you don’t know your attack surface.”CISA, Software Supply Chain Security Guidance 2024

Most Common Attack Vectors

Dependency Confusion: Attackers register packages with identical names in public registries, injecting malicious code into build pipelines.

Typosquatting: Slightly misspelled package names (e.g., “requestes” instead of “requests”) are loaded with malware and downloaded en masse.

Compromised Build Systems: As seen in the SolarWinds attack, the build process itself is manipulated – resulting in finished products containing malware, even though the source code remains unchanged.

Maintainer Takeover: Attackers take over abandoned open-source projects and insert subtle backdoors that activate months later.

Software Bill of Materials (SBOM) as the Foundation

An SBOM lists all components within a software application – similar to an ingredients list on food packaging. It enables organizations to determine within minutes, rather than weeks, whether their systems are affected when a vulnerability is disclosed.

Formats like CycloneDX and SPDX have become industry standards. Tools such as Syft, Trivy, or Grype automatically generate SBOMs from container images and repositories. The EU Cyber Resilience Act will make SBOMs mandatory for all products containing digital elements.

Five Measures for a Secure Supply Chain

1. Automate Dependency Scanning: Every code commit undergoes automated vulnerability scans. Tools like Dependabot, Snyk, or Renovate detect vulnerable packages in real time.

2. Implement Signature Verification: Only signed and verified packages are allowed into the build pipeline. Open-source solutions like Sigstore and Cosign support this.

3. Generate and Maintain SBOMs: Every application must have an up-to-date component list, refreshed with each release.

4. Conduct Supplier Assessments: Software vendors are regularly evaluated for their security practices – including ISO 27001 certification, penetration testing, and incident response procedures.

5. Apply Least Privilege to Build Systems: CI/CD pipelines are granted only the minimum necessary permissions. Secrets are not stored in code or environment variables but delivered via vault solutions.

Key Facts

Attack Increase: +78% supply chain attacks in 2025 vs. 2024 (Sonatype)

Open-Source Share: 80% of code in enterprise applications comes from open-source libraries

Response Time: With SBOMs, vulnerability identification drops from weeks to minutes

Regulation: EU Cyber Resilience Act and NIS2 make supply chain security mandatory

Cost of an Incident: Average of 4.5 million USD per supply chain breach (IBM)

Fact: According to CrowdStrike, 62 percent of all cyberattacks on companies exploit the software supply chain as an entry point.

Fact: The average time to detect a supply chain attack is 287 days – nearly ten months – according to Mandiant.

Frequently Asked Questions

What is Supply Chain Security?

Supply chain security refers to protecting the entire software supply chain – from open-source libraries and build systems to third-party services. The goal is to ensure that no compromised components make their way into internal software.

Why are open-source dependencies a risk?

Open-source packages are often maintained by individuals and can be compromised through account takeovers, social engineering, or dependency confusion. Because they’re used in thousands of applications simultaneously, the impact of a single attack is massively amplified.

What is an SBOM and why is it needed?

A Software Bill of Materials is a machine-readable list of all software components. It allows organizations to instantly determine whether their systems are affected by new vulnerabilities and is increasingly becoming mandatory under the EU Cyber Resilience Act.

Which tools help secure the supply chain?

For dependency scanning: Snyk, Dependabot, and Renovate. For SBOM generation: Syft and Trivy. For signature verification: Sigstore and Cosign. For supplier assessment, platforms like SecurityScorecard and BitSight offer automated evaluations.

How does NIS2 relate to supply chain security?

NIS2 (Network and Information Systems Directive) requires organizations in critical sectors to evaluate and secure the cybersecurity of their entire supply chain. This includes contractual security requirements for suppliers, regular audits, and documented risk assessments of third-party software.

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Header Image Source: Pexels / Markus Spiske

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