Kosai
Track on RadarAcquired by Root · 2025 · news
Delivers security patches for open source vulnerabilities without upgrades.
- Total raised
- —
- Employees
- 4
- Founded
- 2023
- Momentum
- —
Data updated August 2026
About
About Kosai
At a glance
Kosai is a cybersecurity company specializing in Application Security, founded in 2023 and headquartered in West Palm Beach, United States. It employs about 4 people and was acquired by Root in 2025.
Kosai provides vulnerability remediation services for open source software components across various deployment formats including Git repositories, containers, binaries, and source code. The company operates SOSSHub, a platform that delivers production-grade security patches for open source components without requiring upgrades, rebuilds, or replatforming efforts. The company addresses vulnerabilities in open source software including legacy systems and abandonware by creating and delivering fully tested CVE patches. This approach allows organizations to maintain their existing technology stack while addressing security gaps. Kosai's service eliminates the need for forced upgrades or complex integrations, enabling organizations to remediate vulnerabilities in dependencies without disrupting operational systems. Kosai serves multiple industries including financial services, healthcare and life sciences, technology and software companies, government and defense sectors, and retail and eCommerce. The company helps organizations meet various compliance requirements including GDPR, HIPAA, PCI DSS, SOC 2, ISO 27001, GLBA, FFIEC, NIST, DORA, FDA, HITRUST, GxP, FedRAMP, DISA STIGs, CISA, ITAR, and CCPA. The platform provides ongoing support for open source components throughout the software development lifecycle, addressing third-party risk and enabling organizations to maintain security posture without costly replatforming initiatives. Kosai's customers include technology companies such as Nvidia, Microsoft, Google, and Amazon Web Services.
Momentum
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Valuation
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Products
Kosai's products
Funding
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FAQ
Frequently asked questions about Kosai
When was Kosai founded?▾
Kosai was founded in 2023.
Where is Kosai headquartered?▾
Kosai is headquartered in West Palm Beach, United States.
Is Kosai public or private?▾
Kosai is a privately-held company.
How many employees does Kosai have?▾
Kosai has approximately 4 employees.
What does Kosai do?▾
Kosai provides vulnerability remediation services for open source software components across various deployment formats including Git repositories, containers, binaries, and source code. The company operates SOSSHub, a platform that delivers production-grade security patches for open source componen…