# HiddenLayer Raises $100 Million Series B for AI Runtime Security

> HiddenLayer has raised a 100 million dollar Series B led by Delta-v Capital, with Ten Eleven Ventures, Morgan Stanley, Microsoft's M12, and Booz Allen Ventures joining in. That brings the company's total funding to roughly 150 million, and it says annual recurring revenue grew more than tenfold over the past year, with about 90 percent of that growth coming from new customers. The company works in AI runtime security, protecting deployed models from attacks like prompt injection, model theft, and adversarial manipulation, and its client list reportedly spans financial services, defense, intelligence, and at least one frontier model provider. The pitch is that as companies rush AI into production, the attack surface moves from the training pipeline to the live system answering real requests. The timing tracks a broader shift. Gartner figures cited in the raise put 2026 spending on AI security tools at 2.83 billion dollars, up 83 percent year over year. Securing AI is quietly becoming its own category, and investors are betting the companies that got there early will own it.

_Section: [AI Funding Tracker](https://www.wortins.com/funding) · Source: TechCrunch · Published Sunday, September 6, 2026_

## Wortins' read

HiddenLayer has raised a 100 million dollar Series B led by Delta-v Capital, with Ten Eleven Ventures, Morgan Stanley, Microsoft's M12, and Booz Allen Ventures joining in. That brings the company's total funding to roughly 150 million, and it says annual recurring revenue grew more than tenfold over the past year, with about 90 percent of that growth coming from new customers. The company works in AI runtime security, protecting deployed models from attacks like prompt injection, model theft, and adversarial manipulation, and its client list reportedly spans financial services, defense, intelligence, and at least one frontier model provider. The pitch is that as companies rush AI into production, the attack surface moves from the training pipeline to the live system answering real requests. The timing tracks a broader shift. Gartner figures cited in the raise put 2026 spending on AI security tools at 2.83 billion dollars, up 83 percent year over year. Securing AI is quietly becoming its own category, and investors are betting the companies that got there early will own it.

## Source

[Read the full story at TechCrunch](https://techcrunch.com/2026/09/02/hiddenlayer-nabs-100m-as-enterprises-rush-to-secure-their-ai-deployments/)

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