Zenity, an AI security and governance platform designed specifically for AI agents, has closed a $125m Series C round as enterprises scramble to control increasingly autonomous AI systems.
The round was led by Norwest, with new backers Qumra Capital, SoftBank Vision Fund 2, Hitachi Ventures and LG Technology Ventures participating. Existing investors Vertex Ventures, Third Point Ventures, DTCP and Intel Capital also returned. The capital will be used to speed up global expansion, drive platform development and keep pace with surging enterprise appetite for AI agent security.
The funding lands at a moment when the security challenge has shifted. Where enterprise AI protection once centred on models and individual prompts, agents now reach into critical systems, invoke tools, make decisions and act on their own, demanding defences built for that autonomy.
Zenity’s platform addresses this by interpreting an agent’s intent and deterministically allowing, altering or blocking actions before they happen, separating legitimate activity from behaviour that has been manipulated or strays beyond its purpose.
It offers a single security layer across agents built on any framework, spanning Microsoft Copilot, ChatGPT Enterprise and Gemini, coding tools such as Claude, Codex and Cursor, and bespoke systems on AWS Bedrock and AgentCore, Microsoft Foundry and Google Vertex AI.
The company counts many of the world’s biggest enterprises among its customers, most of them Fortune 500, Global 2000 and other leading organisations, including SoftBank Corp. Clients span financial services, healthcare, pharmaceuticals, technology, energy and manufacturing, and its oldest customers include numerous Fortune 50 firms. Revenue has tripled in each of the last two years, with the business on course to repeat that feat in 2026.
Beyond its product, Zenity’s research arm, Zenity Labs, has surfaced industry-shaping flaws in agentic AI, including AgentFlayer, a new class of zero-click attacks able to silently hijack enterprise agents. Its researchers have also shown how a malicious calendar invite could commandeer Perplexity’s Comet browser, found a critical weakness in Microsoft Copilot Studio, and demonstrated data exfiltration via a poisoned document in ChatGPT.
The firm contributes to OWASP Top 10 frameworks and open-source projects such as MITRE ATLAS, and was recognised in an April 2026 Gartner report on AI agent governance. Zenity employs over 230 people worldwide, with R&D in Tel Aviv and go-to-market operations run from New York, and plans to deepen its presence across Europe and Asia Pacific.
Zenity co-founder and CEO Ben Kliger said, “Enterprise AI is skyrocketing. AI experimentation is long over and any organization on the planet is promoting AI agents at velocity and adoption rates never seen before in any tech wave. AI agents change everything in the way that we all work and operate as enterprises are promoting agentic AI in SaaS, on local devices with coding agents and agentic browsers and in their public cloud infrastructure.
“They are rebuilding their infrastructure with agentic infrastructure and employees that access enterprise data, tools, and own business processes and decisions. Michael and I founded Zenity on the belief that software development has changed and is not only reserved for highly skilled engineers, and that it requires an entirely new approach to cybersecurity. As we enter the era of 1 billion agents, our newly announced funding is helping make that vision a reality. This investment allows us to bring AI agent security to many more organizations around the world.”
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