Company lists · Data refreshed September 2026

Top 25 Cybersecurity consultancies based in the United States

Name: Cybersecurity consultancies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 17,981 companies tracked

RevenueBase identified 17,981 company matches for cybersecurity consultancies associated with the United States as of September 2026 and tracks 432,790 professional contacts across them, including 177,039 with verified work emails and 146,373 with mobile numbers. New York is the largest hub.

This list covers company matches for cybersecurity consultancies associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 24, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 24, 2026 How this list was built

17,981Companies

432,790Contacts tracked

177,039Verified emails

146,373Mobile numbers

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The 25 largest cybersecurity consultancies based in the United States

Ranked by team size

Top 25 of 17,981 company matches for cybersecurity consultancies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 24, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Palo Alto Networks	Exact match	Santa Clara, CA, United StatesHQ recorded Sep 24, 2026	10001+	18,431 contacts →
	Exact match “Palo Alto Networks, the global cybersecurity leader, is shaping the cloud-centric future with technology that is transforming the way people and organizations operate.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
2	Fortinet	Exact match	Sunnyvale, CA, United StatesHQ recorded Sep 24, 2026	10001+	14,289 contacts →
	Exact match “Fortinet makes possible a digital world that we can always trust through its mission to protect people, devices, and data everywhere.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
3	Guidehouse	Exact match	Mclean, VA, United StatesHQ recorded Sep 24, 2026	10001+	12,815 contacts →
	Exact match “Guidehouse is a global AI-led professional services firm delivering advisory, technology, and managed services to the commercial and government sectors.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
4	Symantec	Exact match	San Jose, CA, United StatesHQ recorded Sep 24, 2026	10001+	11,169 contacts →
	Exact match “Your backstage pass to the most epic cybersecurity solutions on the market for Endpoint, Network, Data and Cloud security.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
5	Crowdstrike	Exact match	Remote, United StatesHQ recorded Sep 24, 2026	5,001-10,000	10,118 contacts →
	Exact match “CrowdStrike (Nasdaq: CRWD), a global cybersecurity leader, has redefined modern security with the world’s most advanced cloud-native platform for protecting critical areas of…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
6	Comcast Business	Exact match	Philadelphia, PA, United StatesHQ recorded Sep 24, 2026	10001+	8,242 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
7	Check Point Software	Exact match	Redwood City, CA, United StatesHQ recorded Sep 24, 2026	5,001-10,000	7,668 contacts →
	Exact match “Check Point Software Technologies Ltd.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
8	Convergint	Exact match	Hoffman Estates, IL, United StatesHQ recorded Sep 24, 2026	10001+	5,707 contacts →
	Exact match “Convergint is a global systems integrator focused on delivering results for our customers through unparalleled service excellence.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
9	Bugcrowd	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	n/a	3,649 contacts →
	Exact match “We are a crowdsourced security company that safeguards organizations' assets from sophisticated threat actors before they can strike-by uniting our customers with trusted hackers…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
10	U.S. Security Associates, INC	Exact match	Roswell, GA, United StatesHQ recorded Sep 24, 2026	10001+	3,592 contacts →
	Exact match “U.S.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
11	Trellix	Exact match	Plano, TX, United StatesHQ recorded Sep 24, 2026	1,001-5,000	3,447 contacts →
	Exact match “Trellix is a global cybersecurity company delivering intelligence-led cyber resilience for security-conscious organizations at any stage of their journey.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
12	Arctic Wolf	Exact match	Eden Prairie, MN, United StatesHQ recorded Sep 24, 2026	1,001-5,000	3,145 contacts →
	Exact match “Every year new technologies, vendors, and solutions emerge-yet despite this constant innovation, high-profile breaches are all over the headlines.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
13	Qualys	Exact match	Foster City, CA, United StatesHQ recorded Sep 24, 2026	1,001-5,000	3,058 contacts →
	Exact match “Qualys, Inc.(NASDAQ: QLYS) is a leading provider of disruptive cloud-based security, compliance and IT solutions with more than subscription customers worldwide, including a…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
14	Sentinelone	Exact match	Mountain View, CA, United StatesHQ recorded Sep 24, 2026	1,001-5,000	3,052 contacts →
	Exact match “SentinelOne is the world's leading AI-powered cybersecurity platform.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
15	GTT	Exact match	Arlington, VA, United StatesHQ recorded Sep 24, 2026	1,001-5,000	2,933 contacts →
	Exact match “GTT is a leading networking and security as a service provider for multinational organizations, simply and securely connecting people and machines to data and applications –…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
16	Sailpoint	Exact match	Austin, TX, United StatesHQ recorded Sep 24, 2026	1,001-5,000	2,886 contacts →
	Exact match “SailPoint equips the modern enterprise to seamlessly manage and secure access to applications and data through the lens of identity – at speed and scale.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
17	Rapid7	Exact match	Boston, MA, United StatesHQ recorded Sep 24, 2026	1,001-5,000	2,822 contacts →
	Exact match “Rapid7, Inc.(NASDAQ: RPD) is a global leader in AI-powered managed cybersecurity operations, trusted to advance organizations’ cyber resilience.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
18	Compunnel INC	Exact match	Princeton, NJ, United StatesHQ recorded Sep 24, 2026	5,001-10,000	2,502 contacts →
	Exact match “Compunnel serves as a global partner for talent, digital, and cybersecurity solutions, designed to help enterprises staff critical roles, modernize technology, and strengthen…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
19	Security Industry Specialists	Exact match	Culver City, CA, United StatesHQ recorded Sep 24, 2026	5,001-10,000	2,500 contacts →
	Exact match “The industry leader in security, Security Industry Specialists offers unique solutions to Fortune 500 companies, international events, and celebrity clients.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
20	Knowbe4	Exact match	Clearwater, FL, United StatesHQ recorded Sep 24, 2026	1,001-5,000	2,367 contacts →
	Exact match “KnowBe4 empowers the modern workforce to make smarter security decisions every day.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
21	OPTIV	Exact match	Leawood, KS, United StatesHQ recorded Sep 24, 2026	1,001-5,000	2,222 contacts →
	Exact match “Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
22	Tenable	Exact match	Columbia, MD, United StatesHQ recorded Sep 24, 2026	1,001-5,000	2,173 contacts →
	Exact match “Tenable is the exposure management company, exposing and closing the cybersecurity gaps that erode business value, reputation and trust.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
23	RSA Security	Exact match	Burlington, MA, United StatesHQ recorded Sep 24, 2026	1,001-5,000	2,163 contacts →
	Exact match “The identity standard for government, finance, and high-assurance organizations.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
24	Barracuda	Exact match	Campbell, CA, United StatesHQ recorded Sep 24, 2026	1,001-5,000	2,157 contacts →
	Exact match “Barracuda is a leading global cybersecurity company providing complete protection against complex threats for all size business.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
25	Paragon Systems INC	Exact match	Herndon, VA, United StatesHQ recorded Sep 24, 2026	10001+	1,949 contacts →
	Exact match “Paragon Systems employs over 10,500 professionals in specialized operations providing security, fire, investigations, inspections, cybersecurity, risk management, and mission…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “cybersecurity consultancies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 17,981 cybersecurity consultancies based in the United States

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Cybersecurity consultancies based in the United States at a glance

As of Sep 24, 2026

40.9%Verified-email coverage

33.8%Mobile-number coverage

24.1Average contacts per company

1-10Median size (employees)

3.6%Largest-city concentration · New York

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

10,136

11-50

5,467

51-200

1,648

201-500

402

501-1,000

132

1,001-5,000

114

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 26.0d

131,9880–30

40,10731–60

2,74861–90

18990–180

2,007180+

Company record updated

Median 80.0d

00–30

118,22431–60

199,94361–90

90,55390–180

24,070180+

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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: Company records associated with the United States whose business descriptions match “cybersecurity consultancies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 177,039 professional contacts with verified work emails across the full matched dataset. 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 24, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Cybersecurity consultancies by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “cybersecurity consultancies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many cybersecurity consultancies are there based in the United States?

RevenueBase identified 17,981 company matches for cybersecurity consultancies associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Palo Alto Networks tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most cybersecurity consultancies?

New York leads with 640 company records, followed by Washington (366) and Houston (303).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 177,039 professional contacts with verified work emails tracked across these 17,981 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 24, 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 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.