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Apex: A cybersecurity platform that detects, monitors, and remediates AI risks for enterprises using generative AI and LLMs.
Apex has raised $529.0M across 6 funding rounds.
Key people at Apex.
Apex was founded in 2023 by Matan Derman (Founder) and Tomer Avni (Founder).
Apex has raised $529.0M in total across 6 funding rounds.
Based in Tel Aviv, Israel, Apex develops a specialized cybersecurity platform designed to protect enterprise organizations utilizing generative artificial intelligence and large language models. The business-to-business software enables companies to actively detect, monitor, and remediate AI-specific vulnerabilities, such as data leakage, privacy violations, and prompt injection, across both internal applications and external services. The startup emerged from stealth mode with $7 million in seed funding backed by prominent venture capital firms Sequoia Capital and Index Ventures, alongside angel investor Sam Altman. Following its initial market launch to chief information security officers, the enterprise software company was acquired by the publicly traded cybersecurity firm Tenable for a reported valuation of approximately $100 million. Providing a robust foundation for safe enterprise adoption of artificial intelligence technologies, Apex was founded in 2023 by Matan Derman and Tomer Avni.
Apex is a leading security platform purpose-built for generative AI and large language models (LLMs), helping enterprises proactively identify, govern, and remediate AI-related risks across their environments. The company’s agentless platform delivers real-time visibility into AI usage—spanning popular tools like ChatGPT, Microsoft Copilot, Google Gemini, and custom AI applications—while enforcing compliance, detecting threats such as prompt injection and data leakage, and centralizing access management. Apex serves large enterprises, Fortune 500 companies, and regulated industries that are rapidly adopting AI but need to secure their AI workflows at scale. With rapid deployment and a unified portal, Apex has quickly gained traction among global organizations seeking to mitigate the growing risks of AI adoption.
Founded in 2023 in Tel Aviv, Israel, Apex was co-founded by Matan Derman (CEO) and Tomer Avni (Chief Product Officer), both seasoned cybersecurity and AI experts. The idea emerged from firsthand observations of how enterprises were adopting generative AI tools with little oversight, creating new attack vectors and compliance blind spots. Recognizing the urgent need for a security solution tailored to AI’s unique risks, the founders built a platform that could provide instant visibility and control over AI usage—without disrupting workflows. Apex quickly attracted early interest from top CISOs and major investors, including Sam Altman (OpenAI), Clem Delangue (Hugging Face), Sequoia Capital, and Index Ventures. The company’s rapid growth and strategic acquisition by Tenable in 2024 underscore its pivotal role in shaping the future of AI security.
Apex is riding the explosive wave of generative AI adoption, a trend that is fundamentally reshaping how enterprises operate. As organizations rush to deploy AI tools for productivity and innovation, the lack of governance and security has created a new frontier of risk. Apex addresses this critical gap at a time when CISOs are under pressure to secure AI before large-scale breaches occur. The company’s integration with Tenable’s exposure management platform further cements its role in the broader cybersecurity ecosystem, helping organizations manage AI risk as part of their overall security posture. By unifying AI security with traditional IT and cloud risk management, Apex is setting a new standard for how enterprises govern and protect their AI investments.
Apex is poised to become a cornerstone of enterprise AI security, especially as AI adoption accelerates and regulatory scrutiny intensifies. Its integration into Tenable’s platform will amplify its reach and capabilities, enabling organizations to manage AI risk at scale and in context. Looking ahead, Apex is likely to expand its coverage to new AI models, deepen its compliance and automation features, and influence industry standards for AI governance. As AI continues to permeate every layer of business, Apex’s mission—to secure AI without slowing innovation—will remain more relevant than ever, making it a key player in the next chapter of cybersecurity.
Apex was founded in 2023 by Matan Derman (Founder) and Tomer Avni (Founder).
Apex has raised $529.0M in total across 6 funding rounds.
Apex's investors include Achal Upadhyaya, Andreessen Horowitz, Shorewind Capital, SoftBank Investment Advisers, XYZ Venture Capital, Point72 Ventures, Mina Faltas, Joe Lonsdale, StepStone Group, CRV, Greylock, J2 Ventures.
Key people at Apex.
Apex has raised $529.0M across 6 funding rounds. Most recently, it raised $200.0M Series D in September 2025.
| Date | Company | Round | Lead Investor(s) | Co-Investor(s) |
|---|---|---|---|---|
| Oct 3, 2011 | Enkata Technologies | $4.4M Series C | — | Dave Stamm, ComVentures, Morio Kurosaki, Sigma Partners |