Seal Security Secures $13 Million Series A for Open Source Code Safety Innovations

Seal Security Secures $13 Million Series A Funding to Enhance Open Source Code Security

In a significant step forward for application security, Seal Security, a prominent player in the industry, announced on July 29, 2025, that it has successfully raised $13 million in Series A funding. This financial boost, led by Vertex Israel, elevates the company's total funding to $20 million, driven by rapid customer growth and an increasing demand for effective open-source solutions.

Seal Security specializes in the automatic curation of vulnerability-free open-source components, offering organizations a vital tool for securing their software supply chains against burgeoning open-source vulnerabilities. The company’s innovative platform delivers production-ready patches that protect every layer of the software stack, including application dependencies, operating systems, and container base images. Notably, these protections are provided without necessitating version upgrades or complicated migrations—making it easier for teams to maintain secure environments.

The rapid increase in customer numbers and significant growth in annual recurring revenue (ARR) over the past year is indicative of Seal's rising prominence in the security landscape. To keep pace with this growth, Seal Security has doubled its workforce to meet the demands of its expanding user base.

"The pace of modern development is faster than ever, and traditional application security solutions cannot keep up,” remarked Itamar Sher, CEO of Seal Security. "At Seal, we believe the security of the code we develop should be streamlined by sophisticated large language models (LLMs), rather than creating a backlog of vulnerabilities. This latest investment, in conjunction with growing customer demand, underscores the necessity of our patch-first approach. We empower teams to automatically rectify vulnerabilities, achieve compliance, and deliver secure software without disrupting their workflow."

Organizations leveraging Seal Security benefit immensely, resolving critical vulnerabilities within hours, or even minutes, significantly mitigating security risks. Furthermore, the company has committed to an industry-leading remediation service-level agreement (SLA), pledging to remediate identified Common Vulnerabilities and Exposures (CVEs) within 72 hours.

Seal Security's approach seeks to simplify what has traditionally been a convoluted and invasive process for addressing core challenges facing Application Security, DevOps, DevSecOps, and IT teams. The company’s tools help consolidate vulnerability backlogs, resolve dependency issues, handle legacy codebases, and facilitate rapid AI-driven development while ensuring compliance with established standards such as PCI DSS, FedRAMP, DORA, CRA, NYDFS, and others.

The Series A funding round, notably led by Vertex Israel, with contributions from More Investments, SBI Group, and CCL, is set to enhance Seal Security's market strategies and further accelerate the enhancement of its core offerings. According to Tami Bronner, General Partner at Vertex Ventures Israel, "Seal is solidifying its position as the essential remediation layer for open-source and container environments. As the market transitions from passive detection to automated and scalable remediation, leading global cyber firms and highly regulated organizations are increasingly relying on Seal. This trend indicates that CISOs are not just adopting Seal but are integrating it into their core application security strategies."

Looking ahead, Seal Security stands poised to redefine the landscape of secure software delivery, effectively meeting the rising demand for security solutions in an industry marked by rapid technological advancements.

For more information, please visit Seal Security's website.