HiddenLayer Raises $100M Series B

HiddenLayer, an Austin-based AI security company, has secured $100 million in a Series B funding round. The company provides a security platform designed for agentic, generative, and predictive AI applications, helping enterprises protect against AI-specific threats like model poisoning and prompt injection.

Investors

The funding round was led by Delta-v Capital. Additional participants included Ten Eleven Ventures, Morgan Stanley, M12 (Microsoft’s Venture Fund), and Booz Allen Ventures.

HiddenLayer Use of Funds

HiddenLayer plans to use the new capital to deepen its enterprise platform, specifically enhancing its Agentic Runtime Security capabilities. The funds will also support the deployment of a new product focused on securing AI coding agents as they become more integrated into software development workflows. Additionally, the company intends to grow its team and expand into international markets, with a focus on Europe and the EMEA region.

About HiddenLayer

HiddenLayer was founded in 2022 by Chris Sestito. The company provides an end-to-end security platform for AI, offering visibility and protection for autonomous AI workloads. Their product suite includes Agentic Runtime Security and Agent Harness Security, which are designed to detect and stop manipulation, tool misuse, and unauthorized actions in real time.

Funding Details

Company Website: https://hiddenlayer.com

Company: HiddenLayer
Raised: $100M
Round: Series B
Funding Date: September 2, 2026
Lead Investor: Delta-v Capital
Additional Investors: Ten Eleven Ventures, Morgan Stanley, M12, Booz Allen Ventures
Company Website: https://hiddenlayer.com
Software Category: AI Security
Source: https://www.unite.ai/hiddenlayer-raises-100m-series-b-to-expand-ai-agent-security-platform/