What is Onyx?
Onyx Security Inc. operates as a specialized cybersecurity and governance platform engineered to address the emerging landscape of agentic AI. As enterprises integrate autonomous agents into their core business workflows, Onyx provides the necessary visibility, control, and risk management frameworks to ensure these assets remain secure and compliant. The platform treats AI agents as first-class entities, allowing organizations to enforce granular policies and maintain oversight as they scale their AI-driven operations. By bridging the gap between rapid AI adoption and enterprise-grade security, Onyx serves as a critical infrastructure layer for modern, AI-native businesses.
How much funding has Onyx raised?
Onyx has raised a total of $153M across 2 funding rounds:
Other Financing Round
$40M
Series B
$113M
Other Financing Round (2026): $40M with participation from CyberStarts and Conviction
Series B (2026): $113M led by FirstMark Capital, CyberStarts, Conviction, Vintage Investment Partners, Quantum Light Pvt, Technology Crossover Ventures, G Squared, and Bessemer Venture Partners
Key Investors in Onyx
CyberStarts
An Israel-based venture capital firm founded by Gili Raanan that focuses exclusively on early-stage cybersecurity startups, providing hands-on support from product ideation to go-to-market strategy.
Conviction
A venture firm specializing in AI-Native and Software 3.0 companies, targeting early-stage startups with hands-on technical support and deep industry expertise.
FirstMark Capital
A New York-based early-stage venture capital firm that accelerates growth for technology leaders through an extensive network of expert communities, customer access, and talent recruitment.
What's next for Onyx?
Looking ahead, the recent capital injection is expected to accelerate Onyx's product development roadmap and market penetration. As the adoption of agentic AI moves from experimental phases to mission-critical enterprise deployment, the demand for centralized governance platforms is projected to rise sharply. Onyx is well-positioned to capitalize on this shift, leveraging its recent financing to enhance its detection capabilities and expand its policy enforcement engine. The company's focus will likely remain on deepening its integration with existing enterprise ecosystems, ensuring that security teams can effectively manage the risks associated with autonomous agents without stifling innovation. With strong backing from industry-leading venture firms, Onyx is poised to define the standards for AI agent security in the coming years.
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