HiddenLayer
HiddenLayer provides a security platform for AI applications, protecting against adversarial threats.
- Categories
- AI and LLM security, Attack surface management, Penetration testing, Breach and attack simulation
- Based in
- Austin, United States
- Founded
- 2022
- Ownership
- Private
About HiddenLayer
HiddenLayer provides a security platform for artificial intelligence. It sells to large enterprises and governments, including financial services, technology, and US federal organisations. The platform covers agentic, generative, and predictive AI across their lifecycle. It aims to protect intellectual property, support compliance, and allow safe adoption at scale. The platform has four main parts. AI Discovery finds AI applications, models, and assets. AI Supply Chain Security checks models before they are deployed. AI Attack Simulation tests defences against attacks. AI Runtime Security monitors and responds to threats in real time. The company also offers professional services such as AI red teaming, risk assessments, and training. It says its technology is model-agnostic, agentless, and needs no training data, so it does not access customer models or data.
Products
- AI DiscoveryFinds and inventories AI applications, models, and assets across the environment.
- AI Supply Chain SecurityChecks AI models for risks and integrity issues before they are deployed.
- AI Attack SimulationContinuously tests AI systems with simulated attacks to find weaknesses.
- AI Runtime SecurityWatches AI applications in real time to detect and respond to threats.
Ownership and deals
- Raised $100m in a Series B roundInvestors Delta-v Capital, Ten Eleven Ventures, Morgan Stanley, M12 and Booz Allen VenturesReport on the HiddenLayer funding round of 3 Sept 2026 (opens in a new tab)
- Received a $1.3m grantInvestor the U.S. Department of DefenseReport on the HiddenLayer funding round of October 2023 (opens in a new tab)
- Raised $50m in a Series A roundInvestor M12 - Microsoft's Venture FundReport on the HiddenLayer funding round of September 2023 (opens in a new tab)
- Raised $32mReport on the HiddenLayer funding round of July 2023 (opens in a new tab)
- Raised $6m in a seed roundInvestors TenEleven Ventures and Secure OctaneReport on the HiddenLayer funding round of July 2022 (opens in a new tab)
Acquisitions come from SecurityWeek's monthly M&A round-ups from 2021 onwards, from Cybersecurity Ventures' quarterly M&A reports for 2020, and a few from Wikipedia lists. Funding rounds from 2022 onwards come from Return on Security's weekly Security, Funded newsletter. These are dated to the month. A few deals added from the news are dated to the day. Smaller deals may be missing. Amounts are in US dollars.