The XZ Utils backdoor discovered in March 2024 put a single question into sharp focus: who is responsible for securing the software that runs the internet? The answer, as the incident made painfully clear, is often a lone maintainer working without compensation, under enormous pressure, and without meaningful security support.
Open source security funding in 2024 tells a story of growing awareness but persistent structural gaps. More money is flowing into the ecosystem than ever before, but it is not reaching the places that need it most.
The Funding Landscape
Several sources of open source security funding are active in 2024:
OpenSSF and the Linux Foundation
The Open Source Security Foundation, hosted by the Linux Foundation, remains the largest organized effort. Funded by member companies including Google, Microsoft, Amazon, Intel, and others, OpenSSF's budget has grown to approximately $15-20 million annually.
OpenSSF funds initiatives including:
- Alpha-Omega: Direct funding to improve security of the most critical open source projects and the long tail of less-visible but widely-used packages
- Sigstore: Cryptographic signing infrastructure for open source packages
- SLSA Framework: Build provenance and integrity standards
- Scorecard: Automated security assessment of open source projects
- Package Analysis: Automated detection of malicious packages in registries
- Education: Security training for open source maintainers
Sovereign Tech Fund
Germany's Sovereign Tech Fund has allocated approximately 17 million euros specifically for open source infrastructure since its launch. The fund directly sponsors maintainers of critical projects, providing the kind of sustained, no-strings-attached funding that maintainers consistently say they need most.
CISA Open Source Security
CISA has increased its engagement with open source security through the Open Source Software Security initiative, including funding for specific projects and providing federal resources for vulnerability disclosure coordination.
Corporate Direct Funding
Major tech companies fund open source security through various channels:
- Google's GOSST (Google Open Source Security Team) funds fuzzing, vulnerability research, and tool development
- Microsoft funds open source projects through direct grants and employee contributions
- Amazon invests through AWS security programs and direct project sponsorship
- GitHub provides free security tooling (Dependabot, code scanning) to public repositories
Bug Bounty and Vulnerability Rewards
Some organizations offer bounties for vulnerabilities found in open source software they depend on. Google's OSS-VRP (Vulnerability Reward Program) pays researchers for finding bugs in critical open source projects.
The Numbers in Context
Total identifiable open source security funding in 2024 is estimated at $150-200 million across all sources. That sounds substantial until you consider the denominator.
There are an estimated 200 million open source components across major package registries. Critical infrastructure, banking, healthcare, defense, and telecommunications systems all depend on open source. The economic value enabled by open source has been estimated at $8.8 trillion.
$200 million to secure the foundations of an $8.8 trillion ecosystem works out to less than 0.003% of the value it supports.
Where Funding Falls Short
The Long Tail Problem
Funding concentrates on high-profile projects. Linux, Kubernetes, OpenSSL, and Python receive meaningful support. But supply chain security depends on thousands of smaller libraries that form the transitive dependency graph.
The XZ Utils situation exemplified this. A widely-used compression library maintained by a single, exhausted developer. Not prominent enough to attract organized funding, but embedded deeply enough in the dependency graph to affect virtually every Linux distribution.
Programs like Alpha-Omega's "Omega" component attempt to address the long tail through automated security assessments, but the scale of the challenge outstrips available resources.
Maintainer Compensation
Many critical open source projects are maintained by volunteers. Funding programs often provide project resources (CI infrastructure, security audits) rather than direct maintainer compensation. Maintainers burning out and abandoning projects, or being susceptible to social engineering by threat actors offering to "help," remains a systemic risk.
The Tidelift maintainer survey data consistently shows that fewer than half of critical project maintainers receive any compensation for their security work. The median compensation for those who do receive payment is well below market rates for equivalent proprietary software development.
Security Audit Coverage
Professional security audits of open source projects are expensive, typically $50,000-$200,000 per project. The number of projects that warrant auditing far exceeds the available budget. Organizations like OSTIF (Open Source Technology Improvement Fund) coordinate audits but can only cover a fraction of the need.
Sustained vs. One-Time Funding
Much of the available funding is project-based: a grant for a specific security improvement, an audit of a specific codebase, a bounty for a specific vulnerability. What open source security needs is sustained operational funding: ongoing maintenance, continuous vulnerability management, and long-term security engineering.
What Has Improved
Despite the gaps, meaningful progress is happening:
Tooling availability. Free security tooling for open source projects has expanded dramatically. GitHub code scanning, Sigstore signing, OpenSSF Scorecard, and automated dependency updates are available at no cost to any open source project.
Awareness. Board-level conversations about open source supply chain risk were rare before Log4Shell. They are now standard. This translates into budget allocation, even if the amounts remain insufficient.
Coordination. Organizations like OpenSSF provide coordination structures that did not exist five years ago. Rather than each company investing independently, shared investment amplifies impact.
Government engagement. CISA, DARPA, and other government agencies are actively investing in open source security, bringing resources and authority that complement industry efforts.
Structural Challenges
Several structural issues resist easy solutions:
Free rider problem. Organizations that consume open source without contributing to its security are the norm, not the exception. No mechanism exists to ensure that organizations benefiting from open source proportionally fund its security.
Attribution difficulty. When open source security fails, the cost is borne by downstream users, not the open source project itself. This distributes the pain in ways that make it hard to quantify and harder to motivate investment.
Maintainer autonomy. Funding mechanisms must respect the autonomy and independence of open source maintainers. Heavy-handed governance requirements attached to funding can drive maintainers away rather than supporting them.
Measurement gaps. How do you measure the return on open source security investment? Prevented incidents are invisible. Demonstrating value requires counterfactual reasoning that does not translate well into quarterly business reviews.
Practical Recommendations
For organizations that depend on open source (which means virtually all organizations):
Inventory your dependencies. You cannot fund what you do not know you use. Generate SBOMs for your products and understand your transitive dependency graph.
Fund your critical dependencies directly. Identify the open source projects that are most critical to your operations and provide sustained financial support through platforms like GitHub Sponsors, Tidelift, or Open Collective.
Contribute engineering resources. Many open source projects need security engineering contributions more than money. Contributing security fixes, vulnerability management automation, and code review capacity has outsized impact.
Participate in industry initiatives. Join OpenSSF, contribute to shared security tooling, and participate in coordinated vulnerability disclosure processes.
Advocate internally. Make the business case for open source security investment. Quantify the risk of supply chain attacks against the cost of preventive investment.
How Safeguard.sh Helps
Safeguard.sh addresses the first and most critical step: knowing what open source you depend on.
Through automated SBOM generation, Safeguard.sh provides complete visibility into your open source dependency graph, including transitive dependencies that are invisible to manual inventory processes. Continuous vulnerability monitoring ensures that when a security issue affects any component in your supply chain, you know immediately.
This visibility is the foundation for informed funding decisions. When you can see that a critical library in your stack is maintained by a single person with no security support, you can make targeted investments where they matter most.
Safeguard.sh turns open source dependency visibility from an occasional audit into a continuous, actionable capability.