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HiddenLayer

AI security platform with automated red teaming and model scanning

Human-led engagementsAutomated platformAgents and toolsRuntime guardrails

HiddenLayer, founded in Austin in 2022, sells a platform with AI discovery, model supply chain scanning, automated red teaming (launched Nov 2024) and runtime security. Its professional services team runs adversarial assessments using MITRE ATLAS techniques and custom tooling. It won the RSAC 2023 Innovation Sandbox and raised a $100M Series B led by Delta-v Capital in Sep 2026.

Best for: Enterprises that want model scanning, automated red teaming and runtime protection from one independent vendor.

$100M Series B (Sep 2026)

  • – Maps to OWASP
  • ✓ Maps to MITRE ATLAS
  • – Maps to the EU AI Act
  • ✓ SOC 2 or ISO 27001
Visit HiddenLayer

Facts checked November 9, 2026 against the sources listed below. HiddenLayer does not pay to appear here.

1 Legal nameHiddenLayer
2 HeadquartersAustin, TX, USA
3 Founded2022
4 TeamNot disclosed
5 What they testLLM apps, Agents and tool use, Foundation models, Model supply chain, Prompt injection and jailbreaks, Data leakage
6 FrameworksMITRE ATLAS
7 CertificationsSOC 2 (type not stated)
8 Published pricesNot disclosed
9 Customers and partnersHomepage attributions from the NFL, AIG, GitLab, Splunk and others; AWS and Databricks shown as partners. Says it works with unnamed US defense and intelligence customers.

Where we recommend them

Worth knowing before you sign

  • Named customers are homepage attributions only.
  • Red teaming service pages are dated 2024.
  • Maps to MITRE ATLAS only in our sources; no OWASP, NIST or EU AI Act mapping stated.

Go to HiddenLayer's site

Sources

  1. Vendor: homepage
  2. Vendor: Series B announcement
  3. Vendor: professional services
  4. Vendor: automated red teaming launch
  5. Business Wire: RSAC 2023 Innovation Sandbox

Work at HiddenLayer? Send corrections with a source to editors@bestairedteamingcompanies.com. We fix verified errors within five business days.

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