---
title: "HiddenLayer’s $100M Series B: AI Security With 10× ARR and DoD Logos"
description: "Delta-v Capital led HiddenLayer’s $100M Series B as AI security spend surges — company claims 10× ARR growth into the tens of millions, with financial services, big tech, and DoD/IC contracts."
date: 2026-09-03T00:00:00.000Z
tags: ["2026-vc-news", "startup-funding", "venture-capital", "cybersecurity", "ai-ml", "enterprise-saas"]
source: https://venturecapitaltracker.com/2026-hiddenlayer-100m-series-b-ai-security
---

# HiddenLayer’s $100M Series B: AI Security With 10× ARR and DoD Logos

> Delta-v Capital led HiddenLayer’s $100M Series B as AI security spend surges — company claims 10× ARR growth into the tens of millions, with financial services, big tech, and DoD/IC contracts.

**Delta-v Capital** led **HiddenLayer’s $100 million** Series B, reported **September 2, 2026** by TechCrunch, with Ten Eleven Ventures, Morgan Stanley, Microsoft’s **M12**, Booz Allen Hamilton, and others.

**Spine:** three years after a $50M Series A when AI attacks felt theoretical, HiddenLayer is selling into a market Gartner pegs at **$2.83B** this year (+83% YoY) — and claims **>10× ARR** into the tens of millions.

## Key facts

| Field | Detail |
| --- | --- |
| Company | [HiddenLayer](/startup/hiddenlayer) (Austin) |
| Round | **$100M** Series B |
| Lead | Delta-v Capital |
| Participants | Ten Eleven; Morgan Stanley; M12; Booz Allen; others |
| Prior | ~$50M Series A (~2023, TechCrunch context) |
| Traction (company) | ARR **>10×** YoY; “tens of millions”; **>90%** growth from new logos |
| Buyers | FinServ; large tech AI builders; DoD / IC |

## Who uses the product — and for what job

**Users:** security and ML platform teams at banks, hyperscale/tech product orgs, and government agencies deploying models and agents.

**Job:** treat AI like an endpoint — **discovery, runtime protection, attack simulation, supply-chain scanning** — including prompt injection, agent manipulation, malicious tool use, and open-weight model impersonation across ~50 file frameworks.

CEO Chris Sestito likens runtime AI security to **EDR for models and agent workflows**.

## Why now

- Agent and GenAI deployments moved from pilots to production; risk shifted from “will attacks exist?” to **runtime and supply-chain** failure modes.
- Gartner’s AI-security spend forecast (cited by TechCrunch) gives buyers budget cover.
- Agent and model security are splitting into seats — HiddenLayer is the **broader model/runtime** layer, not only skills/add-on vetting.

## Why Delta-v / M12 / Booz — portfolio fit

| Investor | Fit signal |
| --- | --- |
| Delta-v Capital | Cyber growth lead for category Series B |
| Ten Eleven Ventures | Specialist cybersecurity capital |
| M12 | Microsoft ecosystem adjacency for enterprise AI security |
| Booz Allen | Federal/IC distribution path matching DoD logos |
| Morgan Stanley | Late-stage / growth capital for sales scale |

**Likely founder rationale:** pair **cyber specialist** capital with **federal strategic** (Booz) and **platform strategic** (M12) while funding a sales-led expansion into Europe/EMEA — proceeds skew GTM over pure R&D (TechCrunch).

*None of these leads currently have `/fund/` pages in our directory — editorial only.*

## Competitive map

| Company | Angle |
| --- | --- |
| HiddenLayer | Model + agent runtime / supply chain |
| Agent-firewall startups | Inline policy for agent skills/add-ons |
| Noma / Zenity (TechCrunch comps) | Adjacent AI security; >$100M raised each |
| Platform bundles (Microsoft, OpenAI, AWS) | Governance/identity/policy — Sestito argues they won’t own full runtime EDR |

Incumbent cyber majors (Cisco, Palo Alto, Check Point) remain **buy-vs-build** exit overhang.

## What is not proven

- Exact ARR and valuation **undisclosed**.
- Named “700M weekly users” frontier customer is **inferred, not confirmed**.
- Durability vs platform bundling is CEO judgment, not evidence.

## Practical takeaway

- **Founders:** 10× ARR with federal logos is the Series B proof package AI security needed in 2023.
- **Investors:** Separate **runtime EDR** from **agent policy** startups before writing overlapping checks.
- **Buyers:** Ask for attack-simulation results on *your* agent stack — not generic GenAI threat slides.

### Sources

1. [TechCrunch — HiddenLayer $100M](https://techcrunch.com/2026/09/02/hiddenlayer-nabs-100m-as-enterprises-rush-to-secure-their-ai-deployments/)

**By:** [Venture Capital Tracker](https://venturecapitaltracker.com/editorial-policy)

**Editorial note:** AI tools assisted with research, structure, or drafting. Venture Capital Tracker retains human editorial responsibility for factual accuracy, relevance, and source quality before publication.