Company lists · Data refreshed September 2026
Top 25 AI red teaming services based in the United States
RevenueBase identified 403 AI red teaming services headquartered in the United States as of September 2026 and tracks 6,942 professional contacts across them, including 3,060 with verified work emails. San Francisco is the largest hub.
This list covers AI red teaming services headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 19, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest AI red teaming services based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 486 contacts → | ||||
Partial evidence “Pentera provides AI-powered Automated Security Validation for enterprise security teams.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 2 | 364 contacts → | ||||
Partial evidence “Horizon3.ai answers the two most important questions in cybersecurity: If someone tried to compromise us, would we hold up?” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 3 | 348 contacts → | ||||
Indirect evidence “Dark Wolf provides DevSecOps agile software development, information operations, penetration testing and incident response, applied research and rapid prototyping, machine…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 4 | 344 contacts → | ||||
Strong evidence “Bishop Fox is recognized as the leading authority in offensive security, providing solutions ranging from continuous penetration testing, red teaming, and attack surface…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 5 | 269 contacts → | ||||
Indirect evidence “Markon is the leader across full-spectrum cyber and technology-enabled solutions for the most critical national security priorities.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 6 | 265 contacts → | ||||
Indirect evidence “For nearly two decades, Millennium Corporation has been operating on the leading edge of cybersecurity.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 7 | 237 contacts → | ||||
Partial evidence “Synack is the leader in human-led and agentic AI-powered Penetration Testing as a Service (PTaaS), transforming offensive security to help organizations proactively reduce risk…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 8 | 168 contacts → | ||||
Partial evidence “OX Security removes risk at the source - eliminating exposures from AI code generation through cloud runtime - preventing security debt before it ever reaches production.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 9 | 167 contacts → | ||||
Indirect evidence “Fluid Attacks helps companies prevent, detect, manage and remediate vulnerabilities across their application attack surface.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 10 | 152 contacts → | ||||
Partial evidence “Cycode is the leader in Agentic Development Security that secures AI development from prompt to runtime.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 11 | 145 contacts → | ||||
Indirect evidence “Praetorian helps enterprises reduce material risk by revealing their environment exactly as an attacker would.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 12 | 134 contacts → | ||||
Indirect evidence “BreachLock is a global leader in Continuous Attack Surface Discovery and Penetration Testing.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 13 | 131 contacts → | ||||
Strong evidence “We specialize in penetration testing, red teaming, threat hunting, Active SOC services, and educational webinars, workshops, and training.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 14 | 117 contacts → | ||||
Indirect evidence “Secure the ecosystem.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 15 | 113 contacts → | ||||
Indirect evidence “Innovate Fearlessly, Protect Relentlessly." St.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 16 | 109 contacts → | ||||
Partial evidence “Workstreet is an AI-powered security firm.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 17 | 103 contacts → | ||||
Strong evidence “FireCompass is an Agentic AI platform for autonomous penetration testing and red teaming across Web, API, and infrastructure.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 18 | 81 contacts → | ||||
Partial evidence “RagaAI builds AI agents for healthcare and clinical research, taking the manual, repetitive work off teams so they can focus on patients and outcomes.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 19 | 75 contacts → | ||||
Indirect evidence “BuddoBot has been a pioneering force in cybersecurity and data security since 2008.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 20 | 73 contacts → | ||||
Indirect evidence “OnDefend specializes in advanced cybersecurity testing that delivers ongoing security validation across the most complex technology environments.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 21 | 53 contacts → | ||||
Indirect evidence “BreakPoint Labs, a Valiant Solutions Company, delivers offensive and defensive cybersecurity to the Department of War, federal agencies, and commercial organizations.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 22 | 47 contacts → | ||||
Partial evidence “Ridge Security, a leader in AI-powered offensive security, is dedicated to bringing to market innovative cybersecurity products that empower enterprise CISOs and security teams to…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 23 | 44 contacts → | ||||
Indirect evidence “Founded in 2010, Secure Ideas is a small-business consulting firm.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 24 | 44 contacts → | ||||
Partial evidence “Cranium AI is on a mission to secure the AI revolution with our award-winning AI Security and AI Governance platform, empowering organizations of all sizes to confidently adopt…” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
| 25 | 43 contacts → | ||||
Partial evidence “Gray Swan AI is an AI safety and security company.” Source: RevenueBase Database · checked Sep 19, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: AI red teaming services. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names AI red teaming services.
- Partial evidence
- Its own public description names part of AI red teaming services, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name AI red teaming services. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 403 AI red teaming services based in the United States
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AI red teaming services based in the United States at a glance
As of Sep 19, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 403 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among AI red teaming services, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in the United States whose own description of what they do matches “AI red teaming services”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names AI red teaming services), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among AI red teaming services, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 3,060 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 19, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
AI red teaming services by metro
- AI red teaming services in San Francisco32
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names AI red teaming services, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many AI red teaming services are there based in the United States?
RevenueBase identified 403 AI red teaming services headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Pentera, headquartered in Burlington, tops this list with the largest team on record.
Which city has the most AI red teaming services?
San Francisco leads with 32 headquartered companies, followed by New York (20) and Austin (11).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 3,060 verified decision-maker contacts tracked across these 403 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 19, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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