Company lists · Data refreshed September 2026
Top 25 Security audit firms based in the United States
RevenueBase identified 1,872 security audit firms headquartered in the United States as of September 2026 and tracks 23,350 professional contacts across them, including 10,415 with verified work emails and 8,294 with mobile numbers. New York is the largest hub.
This list covers security audit firms 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, how directly it supports the match, and when it was last checked. Data refreshed September 6, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 security audit firms based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,222 | ||||
“Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,232 | ||||
“GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | 947 | ||||
“Coalfire is the premier Cybersecurity and Compliance Services leader for the tech, healthcare, and finance industries.(This page is maintained by Marketing.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | 874 | ||||
“Trustwave, a LevelBlue Company, is a globally recognized cybersecurity leader that reduces cyber risk and fortifies organizations against disruptive and damaging cyber threats.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | 641 | ||||
“At Network Intelligence, we combine our team of 500+ security professionals with Transilience – our cutting-edge AI platform.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | 628 | ||||
“VikingCloud delivers battle-tested cybersecurity and compliance solutions that simply work.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | 473 | ||||
“At Aujas Cybersecurity, we specialize in building and transforming cybersecurity postures to help businesses effectively mitigate risks.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | 329 | ||||
“UpGuard is the only platform that unifies cyber risk management across the vendor supply chain, attack surface, and human workforce.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | 272 | ||||
“Prescient Security is a global cybersecurity and compliance firm delivering risk-based audits, advanced penetration testing, and end-to-end framework support.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | 255 | ||||
“Baxter Clewis Cybersecurity, we bring to the table a unique set of experiences that allow us to best serve your cybersecurity needs.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | 243 | ||||
“Thoropass is the only end-to-end cybersecurity auditor.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 12 | LoginsoftIndirect evidence | 220 | |||
“For over 20 years, leading companies in Telecom, Cybersecurity, Healthcare, Banking, New Media, and more have come to rely on Loginsoft as a trusted resource for technology talent.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 13 | 204 | ||||
“MindPoint Group, a Quantum Sky company, is a cybersecurity specialist trusted by U.S.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | 199 | ||||
“Founded in 2003, Tevora is a specialized management consultancy focused on cybersecurity, risk, and compliance services.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | 182 | ||||
“With 30 years of experience in cyber defense, DeepSeas is trusted by nearly clients around the world, including Fortune 100 enterprises and mid-market organizations, municipality…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | 170 | ||||
“Trusted By 2,880+ World-Class Brands And Organizations Of All Sizes…!” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 17 | ValuementorPartial evidence | 167 | |||
“ValueMentor is a global information security consulting & services company that delivers real results to global business in maximizing cybersecurity.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 18 | 159 | ||||
“Hitachi Systems Trusted Cyber Management Inc.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 19 | NuharborIndirect evidence | 151 | |||
“nuHarbor is a U.S-based cybersecurity firm trusted by public sector and critical infrastructure organizations nationwide.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 20 | 149 | ||||
“AttackIQ® is trusted by top organizations worldwide to validate security controls in real time.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 21 | 148 | ||||
“At Accorian, we don’t just advise on compliance, we operationalize it.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 22 | KirkpatrickpricePartial evidence | 139 | |||
“KirkpatrickPrice is a licensed information security CPA firm, a PCI QSA, and a HITRUST CSF Assessor, providing assurance services to over clients worldwide.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 23 | 136 | ||||
“CISO Global was designed from inception to bring talent together from cybersecurity, compliance, remediation, and secured managed services practice areas for a comprehensive…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 24 | Varutra ConsultingPartial evidence | 125 | |||
“Varutra Consulting, an InfoShare company, is a globally recognized cybersecurity firm delivering cutting-edge solutions in Cloud Security, Mobile Security, Application Security…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 25 | 119 | ||||
“Edgile was founded in 2001 to deliver strategic cybersecurity and risk management services to the Fortune 500.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 1,872 security audit firms based in the United States
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 10,415 reachable decision-makers.
Free signup · no credit card
Security audit firms based in the United States at a glance
As of Sep 6, 2026Companies by employee count
Verified emails by last verification
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 security audit firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “security audit firms”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among security audit firms, 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 an evidence 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, 10,415 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 6, 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.
Security audit firms by metro
- Security audit firms in New York52
- Security audit firms in Atlanta40
- Security audit firms in Houston38
- Security audit firms in Tampa38
- Security audit firms in San Francisco33
- Security audit firms in Austin32
- Security audit firms in Washington31
- Security audit firms in Chicago29
- Security audit firms in Dallas27
- Security audit firms in Miami25
- Security audit firms in San Diego25
Frequently asked
How many security audit firms are there based in the United States?
RevenueBase identified 1,872 security audit firms 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?
OPTIV, headquartered in Leawood, tops this list with the largest team on record.
Which city has the most security audit firms?
New York leads with 52 headquartered companies, followed by Atlanta (40) and Houston (38).
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 10,415 verified decision-maker contacts tracked across these 1,872 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 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 1,872 security audit firms based in the United States. Start with a free account, no credit card.
Get the full listRelated lists
Security audit firms by geography
- Security audit firms based in the United Kingdom
- Security audit firms based in France
- Security audit firms based in Canada
- Security audit firms based in Germany
- Security audit firms based in Brazil
- Security audit firms based in Australia
- Security audit firms based in the Netherlands
- Security audit firms based in Spain
- Security audit firms based in Poland
- Security audit firms based in South Africa
- Security audit firms based in Switzerland
- Security audit firms based in Italy
Browse the directory
Browse: Companies home · All United States lists · All Security audit firms lists · New lists
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 SmartSearch, 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.