Company lists · Data refreshed September 2026

Top 25 Cybersecurity consulting companies for government based in the United States

Name: Cybersecurity consulting companies for government based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 7,045 companies tracked

RevenueBase identified 7,045 company matches for cybersecurity consulting companies for government associated with the United States as of September 2026 and tracks 159,204 professional contacts across them, including 51,527 with verified work emails. Washington is the largest hub.

This list covers company matches for cybersecurity consulting companies for government 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 28, 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 28, 2026 How this list was built

7,045Companies

159,204Contacts tracked

51,527Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest cybersecurity consulting companies for government based in the United States

Ranked by team size

Top 25 of 7,045 company matches for cybersecurity consulting companies for government based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 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 Sep 28, 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 28, 2026 · View company records in RevenueBase
2	Symantec	Exact match	San Jose, CA, United StatesHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
3	Mantech	Exact match	Herndon, VA, United StatesHQ recorded Sep 28, 2026	5,001-10,000	9,697 contacts →
	Exact match “MANTECH is more than a technology company.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4	OPTIV	Exact match	Leawood, KS, United StatesHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
5	Paragon Systems INC	Exact match	Herndon, VA, United StatesHQ recorded Sep 28, 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 28, 2026 · View company records in RevenueBase
6	DMI	Exact match	Mclean, VA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	1,683 contacts →
	Exact match “DMI is a leading provider of digital services and technology solutions with a focus on end-to-end managed services, including managed mobility, cloud, cybersecurity, network…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7	Csra INC	Exact match	Falls Church, VA, United StatesHQ recorded Sep 28, 2026	10001+	1,495 contacts →
	Exact match “General Dynamics Information Technology and CSRA have united to create the premier provider of high-tech IT solutions to the government IT market.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8	Government Acquisitions	Exact match	Cincinnati, OH, United StatesHQ recorded Sep 28, 2026	n/a	1,440 contacts →
	Exact match “Government Acquisitions, LLC (GAI) stands at the forefront of a transformative era, where artificial intelligence is reshaping our world and the stakes have never been higher.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9	Thales Cybersecurity Products	Exact match	Austin, TX, United StatesHQ recorded Sep 28, 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 · Sep 28, 2026 · View company records in RevenueBase
10	Guidepoint Security	Exact match	Reston, VA, United StatesHQ recorded Sep 28, 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 · Sep 28, 2026 · View company records in RevenueBase
11	Andrews International	Exact match	Burbank, CA, United StatesHQ recorded Sep 28, 2026	10001+	1,081 contacts →
	Exact match “Twenty-five years ago Andrews International (AI) began forming a network of the world’s foremost security authorities and connecting with strategic partners for operations…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12	PPC	Exact match	Trevose, PA, United StatesHQ recorded Sep 28, 2026	201-500	979 contacts →
	Exact match “PPC is now part of DSA” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13	Chugach Government Solutions, LLC	Exact match	Anchorage, AK, United StatesHQ recorded Sep 28, 2026	1,001-5,000	954 contacts →
	Exact match “Chugach Government Solutions,(CGS) is a government contracting company formed by Chugach Alaska Corporation.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14	Coalfire	Exact match	Chicago, IL, United StatesHQ recorded Sep 28, 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 · Sep 28, 2026 · View company records in RevenueBase
15	The MIL Corporation	Exact match	Bowie, MD, United StatesHQ recorded Sep 28, 2026	501-1,000	941 contacts →
	Exact match “Established in 1980, MIL provides innovative cyber, engineering, financial, and information technology services to the federal government.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16	Trustwave, A Levelblue Company	Exact match	Chicago, IL, United StatesHQ recorded Sep 28, 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 · Sep 28, 2026 · View company records in RevenueBase
17	Quantum SKY	Exact match	Reston, VA, United StatesHQ recorded Sep 28, 2026	1,001-5,000	872 contacts →
	Exact match “Quantum Sky is a mission technology company that builds secure AI, cyber, cloud, and quantum capabilities for defense, intelligence, and federal civilian agencies.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18	Cyderes	Exact match	Kansas City, MO, United StatesHQ recorded Sep 28, 2026	1,001-5,000	844 contacts →
	Exact match “Today’s threatscape is relentless.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19	SSE	Exact match	St. Louis, MO, United StatesHQ recorded Sep 28, 2026	201-500	837 contacts →
	Exact match “Systems Service Enterprises, Inc.(SSE) is a leader in Information Technology, Cybersecurity Compliance, and Training and Technical Data solutions for small-medium sized businesses…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20	Application Specialist Kompany ASK	Exact match	Lansing, MI, United StatesHQ recorded Sep 28, 2026	n/a	785 contacts →
	Exact match “ASK is now Convergence Networks!” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21	RED River	Exact match	Chantilly, VA, United StatesHQ recorded Sep 28, 2026	501-1,000	709 contacts →
	Exact match “Red River brings together the ideal combination of talent, partners and products to disrupt the status quo in technology and drive success for business and government in ways…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22	Network Intelligence	Exact match	Plano, TX, United StatesHQ recorded Sep 28, 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 · Sep 28, 2026 · View company records in RevenueBase
23	Telos Corporation	Exact match	Ashburn, VA, United StatesHQ recorded Sep 28, 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 · Sep 28, 2026 · View company records in RevenueBase
24	Vikingcloud	Exact match	Chicago, IL, United StatesHQ recorded Sep 28, 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 · Sep 28, 2026 · View company records in RevenueBase
25	Planned Systems International	Exact match	Columbia, MD, United StatesHQ recorded Sep 28, 2026	1,001-5,000	611 contacts →
	Exact match “Since 1988, PSI teams have provided our government customers with innovative, cost effective solutions that solve today’s complex challenges, improve operational efficiencies, and…” Recorded in the RevenueBase company graph · Sep 28, 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 consulting companies for government”. 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 7,045 cybersecurity consulting companies for government based in the United States

See the full list, filter by size, metro and specialty, and access 51,527 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Cybersecurity consulting companies for government based in the United States at a glance

As of Sep 28, 2026

32.4%Verified-email coverage

22.6Average contacts per company

1-10Median size (employees)

2.9%Largest-city concentration · Washington

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

3,939

11-50

2,056

51-200

756

201-500

165

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 7,045 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 “cybersecurity consulting companies for government” 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 51,527 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 28, 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 consulting companies for government 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 consulting companies for government”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many cybersecurity consulting companies for government are there based in the United States?

RevenueBase identified 7,045 company matches for cybersecurity consulting companies for government 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?

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

Which city has the most cybersecurity consulting companies for government?

Washington leads with 204 company records, followed by New York (184) and Atlanta (124).

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 51,527 professional contacts with verified work emails tracked across these 7,045 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 28, 2026.

Ready to reach these companies? Verified emails and direct dials for all 7,045 cybersecurity consulting companies for government based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

Cybersecurity consulting companies for government by geography

Browse the directory

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.