HiddenLayer

What the company sells

HiddenLayer sells AI security that analyzes AI applications, models, and assets, identifies their risks, and protects them as teams build. HiddenLayer builds an inventory of the AI applications, models, and assets in a customer environment. HiddenLayer offers a firewall that monitors, detects, and responds in real time to adversarial threats on agentic and generative AI applications. HiddenLayer continually identifies threats and validates defenses for agentic and generative AI applications.

HiddenLayer says developers are embedding AI into tools and workflows faster than security teams can track. HiddenLayer says third-party models introduce unknown code and vulnerabilities. HiddenLayer says coding agents can read sensitive files, execute shell commands, install dependencies, or expose credentials. HiddenLayer says attackers can manipulate AI systems through prompts, retrieved content, tool output, or other untrusted inputs.

HiddenLayer automatically builds a living inventory of AI across an environment, including shadow AI. HiddenLayer scans cloud accounts, repos, endpoints, and pipelines to detect every model and associated agent. HiddenLayer scans AWS, Azure, GCP, VMs, containers, and APIs for AI assets. HiddenLayer automatically associates AI assets with owners, business units, sensitivity, and risk levels. HiddenLayer aligns AI assets with NIST, OWASP, and ATLAS frameworks.

HiddenLayer analyzes models for malware, vulnerabilities, backdoors, and unknown components before they reach production. HiddenLayer scans model files and URLs for malware, CVEs, backdoors, and integrity issues before deployment. HiddenLayer analyzes architectures, layers, weights, and artifacts for tampering or anomalies. HiddenLayer tests commercial models for safety and security before integration. HiddenLayer identifies where models come from, including origin and licensing.

HiddenLayer continuously tests AI systems against evolving attacks and uncovers weaknesses early. HiddenLayer tests for jailbreaks, injection, role confusion, and harmful response patterns. HiddenLayer probes for extraction of PHI, PII, or proprietary data. HiddenLayer simulates unauthorized actions through agent tools and APIs.

HiddenLayer detects and responds to AI attacks in production. HiddenLayer monitors prompts, outputs, memory, and agent actions in real time to detect and block prompt injection, data leakage, model theft, and unsafe tool use. HiddenLayer observes and reconstructs agent interactions across tools, data, and workflows in real time. HiddenLayer detects, blocks, or redacts unsafe actions and sensitive information according to policy and platform capabilities. HiddenLayer integrates runtime detections and enforcement events with existing SIEM, SOAR, and security operations workflows. HiddenLayer extends Runtime Security into AI coding agents through lightweight, on-device integration.

HiddenLayer enforces boundaries around content, toxicity, bias, and regulatory restrictions. HiddenLayer detects and prevents PII, PHI, and proprietary data exposure in generated content. HiddenLayer enforces safe, compliant, and policy aligned AI behavior across applications, models, and business units. HiddenLayer combines safety guardrails with real time threat detection and prompt injection blocking. HiddenLayer protects autonomous agents and MCP based systems from prompt injection, unsafe tool use, and harmful autonomous actions.

HiddenLayer says its platform deploys across any architecture without exposing intellectual property, weights, prompts, or customer data. HiddenLayer offers deployment through APIs, gateways, SDKs, or lightweight on-device integrations. HiddenLayer offers services modeled after active adversarial campaigns targeting enterprise AI applications. HiddenLayer services evaluate every layer from AI asset discovery to data and model supply chains to runtime environments. HiddenLayer services provide detailed remediation playbooks tailored to models, infrastructure, and compliance needs. HiddenLayer services work in concert with the HiddenLayer AI Security Platform for ongoing protection. HiddenLayer services align with emerging AI governance standards, including NIST AI RMF and EU AI Act requirements.

HiddenLayer describes securing AI used for fraud detection, trading, compliance, and customer engagement. HiddenLayer describes establishing governance controls aligned with FFIEC and OCC frameworks. HiddenLayer detects malware, tampered artifacts, and backdoored weights in pretrained models and libraries. HiddenLayer protects agentic, generative, and predictive AI systems for mission assurance.^{[1][4][5][6][7][8][9][10][11][12][13]}

Categories

• AI model and agent security (primary category)
• AI firewalls and guardrails
• Compare HiddenLayer with companies in the same categoryside by side

Headquarters

Austin, United States^[2]

Founded

2022^[2]

Ownership

Privately held^[3]

CISO on record

Not yet on our record. Send a verified source

Website

hiddenlayer.com

Products and services

Product names as the company writes them; what each does, in our words, from the company's own product pages. Never how well it does it.

• Model Scanning^[1][4][6]

  Scans third-party and proprietary machine learning models to detect hidden risks.

• Red Teaming^[1][6][10]

  Runs continuous testing intended to identify threats early and validate AI defenses.

• AI Guardrails^[1][11]

  Applies policy-based controls intended to prevent misuse, data leakage and adversarial attacks on AI systems.

• Agentic and MCP Protection^[1][4][5][6]

  Monitors autonomous AI agents and MCP connections and is intended to guard against rogue behavior.

Competitors and alternatives

The other companies on our record filed under the same categories, category by category: first those that lead with that category and share more of HiddenLayer's categories, then alphabetical. A list from the record, never a ranking.

• On ai model and agent security, HiddenLayer competes with AIShield, Alice, Enkrypt AI, Fiddler AI, Mindgard, Noma Security, Pangea, Pillar Security, Promptfoo, SplxAI and 54 more.

• On ai firewalls and guardrails, HiddenLayer competes with Impart Security, Lakera, Lasso Security, Operant AI, Prompt Security, AIShield, Alice, Enkrypt AI, Fiddler AI, Mindgard and 9 more.

Recent news

Dated company events from the last twelve months, each in one sentence of ours with its source. Newest first.

• August 12, 2026

  HiddenLayer announced the appointment of Mike Gesnaldo as Chief Revenue Officer. HiddenLayer^[14]

References

Every fact above cites one of these by number. Tier A is the company itself, a regulator or a filing; tier B is trade or business press.

1. [1]HiddenLayer | Total AI SecurityHiddenLayer · undated page, accessed September 27, 2026 · Tier A: the company, a regulator or a filing
2. [2]Hiddenlayer launches the first security solution to protect ai powered products 301587864HiddenLayer via PR Newswire · prnewswire.com · published July 19, 2022 · Tier A: the company, a regulator or a filing
3. [3]Hiddenlayer 100m series b ai securityHiddenLayer · hiddenlayer.com · undated page, accessed September 27, 2026 · Tier A: the company, a regulator or a filing
4. [4]Application Developers | HiddenLayerHiddenLayer · undated page, accessed November 10, 2026 · Tier A: the company, a regulator or a filing
5. [5]AI Runtime Security | HiddenLayerHiddenLayer · undated page, accessed November 10, 2026 · Tier A: the company, a regulator or a filing
6. [6]Platform | HiddenLayerHiddenLayer · undated page, accessed November 10, 2026 · Tier A: the company, a regulator or a filing
7. [7]AI Discovery | HiddenLayerHiddenLayer · undated page, accessed November 10, 2026 · Tier A: the company, a regulator or a filing
8. [8]AI Supply Chain Security | HiddenLayerHiddenLayer · undated page, accessed November 10, 2026 · Tier A: the company, a regulator or a filing
9. [9]AI Attack Simulation | HiddenLayerHiddenLayer · undated page, accessed November 10, 2026 · Tier A: the company, a regulator or a filing
10. [10]CISO | HiddenLayerHiddenLayer · undated page, accessed November 10, 2026 · Tier A: the company, a regulator or a filing
11. [11]AI Guardrails | HiddenLayerHiddenLayer · undated page, accessed November 10, 2026 · Tier A: the company, a regulator or a filing
12. [12]Services | HiddenLayerHiddenLayer · undated page, accessed November 10, 2026 · Tier A: the company, a regulator or a filing
13. [13]Financial Services | HiddenLayerHiddenLayer · undated page, accessed November 10, 2026 · Tier A: the company, a regulator or a filing
14. [14]HiddenLayer Appoints Mike Gesnaldo as Chief Revenue OfficerHiddenLayer · published August 12, 2026 · Tier A: the company, a regulator or a filing

Last verified November 2, 2026. Our code found the quoted passage behind each fact on its source page when the fact was recorded, and re-checks every record against its sources each month.

Recorded September 27, 2026, expanded November 10, 2026 from the references above.

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