Zenity raises $125M Series C for AI agent security platform

Zenity raises $125M Series C for AI agent security platform

Zenity, which develops a security platform specifically for AI agents, has raised $125 million in a Series C round led by Norwest Venture Partners. The funding round underscores the rapid emergence of a dedicated security tooling layer as enterprises deploy AI agents in production environments.

The raise signals that the AI agent ecosystem is entering a new phase where security, governance, and observability have become critical infrastructure rather than afterthoughts. As organizations move from experimental chatbot deployments to autonomous agents with system-level access and the ability to execute actions, a new attack surface has opened — one that demands purpose-built guardrails rather than repurposed traditional cybersecurity tools. This event reinforces the pattern of "infrastructure layer fragmentation," where every new AI capability tier spawns a dedicated tooling stack.

This is an incremental but meaningful marker in the AI agent security segment: a category that was essentially nonexistent 18 months ago is now attracting nine-figure rounds. The capital validates the thesis that enterprise adoption of AI agents will require a parallel security industry, not just bolted-on controls. However, the category remains early — Zenity will need to demonstrate that its approach scales beyond early-adopter use cases and that traditional security incumbents (e.g., CrowdStrike, Palo Alto Networks) do not absorb this function through their existing platforms.

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