Company lists · Data refreshed October 2026

Top 25 Cyber security consultancies based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Oct 1, 2026 7,935 companies tracked

RevenueBase identified 7,935 company matches for cyber security consultancies associated with the United States as of October 2026 and tracks 129,246 professional contacts across them, including 50,176 with verified work emails. New York is the largest hub.

This list covers company matches for cyber security 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 October 1, 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 Oct 1, 2026 How this list was built

7,935Companies

129,246Contacts tracked

50,176Verified emails

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The 25 largest cyber security consultancies based in the United States

Ranked by team size

Top 25 of 7,935 company matches for cyber security consultancies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 1, 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	Fortinet	Exact match	Sunnyvale, CA, United StatesHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
2	Symantec	Exact match	San Jose, CA, United StatesHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
3	Trellix	Exact match	Plano, TX, United StatesHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
4	OPTIV	Exact match	Leawood, KS, United StatesHQ recorded Oct 1, 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 · Oct 1, 2026 · View company records in RevenueBase
5	Fortra	Exact match	Eden Prairie, MN, United StatesHQ recorded Oct 1, 2026	1,001-5,000	1,648 contacts →
	Exact match “Fortra delivers AI-amplified cybersecurity solutions that help organizations use and protect data with confidence.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
6	Thales Cybersecurity Products	Exact match	Austin, TX, United StatesHQ recorded Oct 1, 2026	1,001-5,000	1,252 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
7	Guidepoint Security	Exact match	Reston, VA, United StatesHQ recorded Oct 1, 2026	1,001-5,000	1,232 contacts →
	Exact match “GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
8	Imperva	Exact match	Austin, TX, United StatesHQ recorded Oct 1, 2026	10001+	1,217 contacts →
	Exact match “On Dec.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
9	PPC	Exact match	Trevose, PA, United StatesHQ recorded Oct 1, 2026	201-500	979 contacts →
	Exact match “PPC is now part of DSA” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
10	Coalfire	Exact match	Chicago, IL, United StatesHQ recorded Oct 1, 2026	1,001-5,000	947 contacts →
	Exact match “Coalfire is the premier Cybersecurity and Compliance Services leader for the tech, healthcare, and finance industries.(This page is maintained by Marketing.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
11	Zerofox	Exact match	Baltimore, MD, United StatesHQ recorded Oct 1, 2026	501-1,000	904 contacts →
	Exact match “ZeroFox is the solution to discover, validate, and disrupt external cyber threats before they harm revenue or reputation.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
12	Trustwave, A Levelblue Company	Exact match	Chicago, IL, United StatesHQ recorded Oct 1, 2026	501-1,000	874 contacts →
	Exact match “Trustwave, a LevelBlue Company, is a globally recognized cybersecurity leader that reduces cyber risk and fortifies organizations against disruptive and damaging cyber threats.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
13	Cyderes	Exact match	Kansas City, MO, United StatesHQ recorded Oct 1, 2026	1,001-5,000	844 contacts →
	Exact match “Today’s threatscape is relentless.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
14	Application Specialist Kompany ASK	Exact match	Lansing, MI, United StatesHQ recorded Oct 1, 2026	n/a	785 contacts →
	Exact match “ASK is now Convergence Networks!” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
15	SDG Corporation	Exact match	Norwalk, CT, United StatesHQ recorded Oct 1, 2026	201-500	660 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
16	Network Intelligence	Exact match	Plano, TX, United StatesHQ recorded Oct 1, 2026	501-1,000	641 contacts →
	Exact match “At Network Intelligence, we combine our team of 500+ security professionals with Transilience – our cutting-edge AI platform.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
17	Telos Corporation	Exact match	Ashburn, VA, United StatesHQ recorded Oct 1, 2026	501-1,000	629 contacts →
	Exact match “Telos Corporation (NASDAQ: TLS) empowers and protects the world’s most security-conscious organizations with efficient, adaptable, and secure solutions that safeguard people…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
18	Vikingcloud	Exact match	Chicago, IL, United StatesHQ recorded Oct 1, 2026	1,001-5,000	628 contacts →
	Exact match “VikingCloud delivers battle-tested cybersecurity and compliance solutions that simply work.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
19	Ultraviolet Cyber	Exact match	Mclean, VA, United StatesHQ recorded Oct 1, 2026	501-1,000	523 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
20	Blue Mantis	Exact match	Portsmouth, NH, United StatesHQ recorded Oct 1, 2026	201-500	503 contacts →
	Exact match “Blue Mantis is a security-first, IT solutions and services provider with a 30+ year history of successfully helping clients achieve business modernization by applying…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
21	Aujas Cybersecurity	Exact match	Cupertino, CA, United StatesHQ recorded Oct 1, 2026	1,001-5,000	473 contacts →
	Exact match “At Aujas Cybersecurity, we specialize in building and transforming cybersecurity postures to help businesses effectively mitigate risks.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
22	Xcelerate Solutions	Exact match	Mclean, VA, United StatesHQ recorded Oct 1, 2026	1,001-5,000	447 contacts →
	Exact match “At Xcelerate, safeguarding the nation isn’t just a mission-it’s our obsession.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
23	Palo Alto Networks Unit 42	Exact match	Santa Clara, CA, United StatesHQ recorded Oct 1, 2026	5,001-10,000	441 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
24	United Security, Inc. USI	Exact match	Red Bank, NJ, United StatesHQ recorded Oct 1, 2026	1,001-5,000	416 contacts →
	Exact match “United Security Inc.(USI) provides personalized security solutions enhanced by advanced technology and cyber services.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
25	Edgewater Federal Solutions, INC	Exact match	Frederick, MD, United StatesHQ recorded Oct 1, 2026	501-1,000	410 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 1, 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 “cyber security 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 7,935 cyber security consultancies based in the United States

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Cyber security consultancies based in the United States at a glance

As of Oct 1, 2026

38.8%Verified-email coverage

16.3Average contacts per company

1-10Median size (employees)

3.2%Largest-city concentration · New York

Oct 1, 2026Page data refreshed

Companies by employee count

1-10

4,714

11-50

2,307

51-200

673

201-500

132

501-1,000

1,001-5,000

5,001-10,000

10001+

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 7,935 companies.

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 “cyber security 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 50,176 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 October 1, 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.

Cyber security 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 “cyber security consultancies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many cyber security consultancies are there based in the United States?

RevenueBase identified 7,935 company matches for cyber security consultancies associated with the United States as of October 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?

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

Which city has the most cyber security consultancies?

New York leads with 253 company records, followed by Washington (164) and Houston (141).

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 50,176 professional contacts with verified work emails tracked across these 7,935 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 October 1, 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.