Company lists · Data refreshed September 2026
Top 25 Information security consulting companies based in the United States
RevenueBase identified 7,559 information security consulting companies headquartered in the United States as of September 2026 and tracks 86,569 professional contacts across them, including 32,673 with verified work emails. New York is the largest hub.
This list covers information security consulting companies 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 21, 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 information security consulting companies based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 2,222 contacts → | ||||
Indirect evidence “Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,252 contacts → | ||||
Indirect evidence “Thales is a global leader in cybersecurity, helping the most trusted organizations in the world protect their most critical applications, data, and identities anywhere at scale.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 1,232 contacts → | ||||
Partial evidence “GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 979 contacts → | ||||
Indirect evidence “PPC is now part of DSA” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 947 contacts → | ||||
Indirect evidence “Coalfire is the premier Cybersecurity and Compliance Services leader for the tech, healthcare, and finance industries.(This page is maintained by Marketing.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 874 contacts → | ||||
Indirect evidence “Trustwave, a LevelBlue Company, is a globally recognized cybersecurity leader that reduces cyber risk and fortifies organizations against disruptive and damaging cyber threats.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 844 contacts → | ||||
Indirect evidence “Today’s threatscape is relentless.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 818 contacts → | ||||
Partial evidence “As a leading IT consulting and outsourcing services firm, Buchanan Technologies helps organizations across North America turn their business technology into a powerful competitive…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 660 contacts → | ||||
Indirect evidence “With more than 30 years of experience partnering with global enterprises on complex business and IT initiatives, SDG is a trusted provider of advisory, transformation, and managed…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 641 contacts → | ||||
Partial evidence “At Network Intelligence, we combine our team of 500+ security professionals with Transilience – our cutting-edge AI platform.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 629 contacts → | ||||
Partial evidence “Telos Corporation (NASDAQ: TLS) empowers and protects the world’s most security-conscious organizations with efficient, adaptable, and secure solutions that safeguard people…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 628 contacts → | ||||
Indirect evidence “VikingCloud delivers battle-tested cybersecurity and compliance solutions that simply work.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 523 contacts → | ||||
Partial evidence “UltraViolet Cyber is the only security operations partner that unifies red, blue, and purple team capabilities into one integrated program, finding what's vulnerable, stopping…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 473 contacts → | ||||
Indirect evidence “At Aujas Cybersecurity, we specialize in building and transforming cybersecurity postures to help businesses effectively mitigate risks.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 447 contacts → | ||||
Indirect evidence “At Xcelerate, safeguarding the nation isn’t just a mission-it’s our obsession.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 441 contacts → | ||||
Partial evidence “Palo Alto Networks Unit 42 brings together world-renowned threat researchers with an elite team of incident responders and security consultants to create an intelligence-driven…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 416 contacts → | ||||
Partial evidence “United Security Inc.(USI) provides personalized security solutions enhanced by advanced technology and cyber services.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 410 contacts → | ||||
Partial evidence “Edgewater Federal Solutions was founded in 2002 with the mission of being the best IT consulting company possible for our government clients, our contracting partners and our…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 369 contacts → | ||||
Indirect evidence “Novacoast is an international cybersecurity company specializing in IT services and software development.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 369 contacts → | ||||
Indirect evidence “As of April 2023, Paladion is part of Atos Group.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 365 contacts → | ||||
Indirect evidence “Welcome to IBN Technologies, LLC, Your Trusted Partner in Cybersecurity, Cloud, and Finance Solutions With 26+ years of expertise, IBN Technologies leads in delivering integrated…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 329 contacts → | ||||
Indirect evidence “UpGuard is the only platform that unifies cyber risk management across the vendor supply chain, attack surface, and human workforce.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 327 contacts → | ||||
Partial evidence “For the security practitioner caught between rapidly evolving threats and demanding executives, IANS Research is a clear-headed resource for decision-making and articulating risk.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 323 contacts → | ||||
Indirect evidence “Continental Technologies Inc (CTI) configures, distributes, designs and maintains technology solutions for customers around the globe and remains both privately-held and locally…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 317 contacts → | ||||
Partial evidence “Intelligent Technical Solutions is your trusted business partner for all your Cybersecurity, Managed and Co-managed IT support, Risk & Compliance, Data Analytics, and Consulting…” Source: RevenueBase Database · checked Sep 21, 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: information security consulting companies. 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 information security consulting companies.
- Partial evidence
- Its own public description names part of information security consulting companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name information security consulting companies. 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 7,559 information security consulting companies based in the United States
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Information security consulting companies based in the United States at a glance
As of Sep 21, 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 7,559 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 information security consulting companies, 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 “information security consulting companies”. 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 information security consulting companies), 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 information security consulting companies, 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, 32,673 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 21, 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.
Information security consulting companies by metro
- Information security consulting companies in New York219
- Information security consulting companies in Houston152
- Information security consulting companies in Washington150
- Information security consulting companies in Atlanta135
- Information security consulting companies in Austin126
- Information security consulting companies in Dallas119
- Information security consulting companies in Chicago104
- Information security consulting companies in Miami101
- Information security consulting companies in San Francisco97
- Information security consulting companies in Tampa88
- Information security consulting companies in San Diego78
- Information security consulting companies in Los Angeles76
- Information security consulting companies in Arlington69
- Information security consulting companies in Boston65
- Information security consulting companies in Charlotte65
- Information security consulting companies in Denver63
- Information security consulting companies in Seattle62
- Information security consulting companies in Phoenix55
- Information security consulting companies in Alexandria53
- Information security consulting companies in San Antonio52
- Information security consulting companies in Orlando51
- Information security consulting companies in Columbia49
- Information security consulting companies in Las Vegas49
- Information security consulting companies in Reston48
- Information security consulting companies in Raleigh45
- Information security consulting companies in Mclean41
- Information security consulting companies in Ashburn40
- Information security consulting companies in Baltimore38
- Information security consulting companies in Fairfax37
- Information security consulting companies in Huntsville37
- Information security consulting companies in Portland36
- Information security consulting companies in Columbus35
- Information security consulting companies in Minneapolis34
- Information security consulting companies in Sheridan34
- Information security consulting companies in Plano33
- Information security consulting companies in Philadelphia32
- Information security consulting companies in Richmond32
- Information security consulting companies in Scottsdale32
- Information security consulting companies in Pittsburgh31
- Information security consulting companies in Wilmington31
- Information security consulting companies in San Jose30
- Information security consulting companies in Herndon29
- Information security consulting companies in Irvine29
- Information security consulting companies in Colorado Springs28
- Information security consulting companies in Frisco28
- Information security consulting companies in Indianapolis28
- Information security consulting companies in Dover27
- Information security consulting companies in Fort Lauderdale27
- Information security consulting companies in Nashville27
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 information security consulting companies, 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 information security consulting companies are there based in the United States?
RevenueBase identified 7,559 information security consulting companies 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 information security consulting companies?
New York leads with 219 headquartered companies, followed by Houston (152) and Washington (150).
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 32,673 verified decision-maker contacts tracked across these 7,559 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 21, 2026.
Ready to reach these companies? Verified emails and direct dials for all 7,559 information security consulting companies based in the United States. Start with a free account, no credit card.
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Information security consulting companies by geography
- Information security consulting companies based in Adelaide, Australia
- Information security consulting companies based in Brisbane, Australia
- Information security consulting companies based in Canberra, Australia
- Information security consulting companies based in Melbourne, Australia
- Information security consulting companies based in Perth, Australia
- Information security consulting companies based in Sydney, Australia
- Information security consulting companies based in Barueri, Brazil
- Information security consulting companies based in Belo Horizonte, Brazil
- Information security consulting companies based in Brasilia, Brazil
- Information security consulting companies based in Curitiba, Brazil
- Information security consulting companies based in Porto Alegre, Brazil
- Information security consulting companies based in Rio De Janeiro, Brazil
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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