Company lists · Data refreshed November 2026

Top 25 Cybersecurity infrastructure contractors based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Nov 5, 2026 3,171 companies tracked

RevenueBase identified 3,171 company matches for cybersecurity infrastructure contractors associated with the United States as of November 2026 and tracks 69,352 professional contacts across them, including 26,057 with verified work emails. New York is the largest hub.

This list covers company matches for cybersecurity infrastructure contractors 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 November 5, 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 Nov 5, 2026 How this list was built

3,171Companies

69,352Contacts tracked

26,057Verified emails

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The 25 largest cybersecurity infrastructure contractors based in the United States

Ranked by team size

Top 25 of 3,171 company matches for cybersecurity infrastructure contractors based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 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	Convergint	Exact match	Hoffman Estates, IL, United StatesHQ recorded Nov 5, 2026	10001+	6,031 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 · Nov 5, 2026 · View company records in RevenueBase
2	OPTIV	Exact match	Leawood, KS, United StatesHQ recorded Nov 5, 2026	1,001-5,000	2,171 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 · Nov 5, 2026 · View company records in RevenueBase
3	Paragon Systems INC	Exact match	Herndon, VA, United StatesHQ recorded Nov 5, 2026	10001+	1,928 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 · Nov 5, 2026 · View company records in RevenueBase
4	Dynetics, INC	Exact match	Huntsville, AL, United StatesHQ recorded Nov 5, 2026	10001+	1,482 contacts →
	Exact match “Leidos Dynetics provides responsive, cost-effective engineering, scientific, IT solutions to the national security, cybersecurity, space, and critical infrastructure sectors.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5	Thales Cybersecurity Products	Exact match	Austin, TX, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,413 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 · Nov 5, 2026 · View company records in RevenueBase
6	Guidepoint Security	Exact match	Reston, VA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	1,346 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 · Nov 5, 2026 · View company records in RevenueBase
7	Opswat	Exact match	Tampa, FL, United StatesHQ recorded Nov 5, 2026	501-1,000	1,192 contacts →
	Exact match “OPSWAT protects critical infrastructure.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8	DSA	Exact match	Trevose, VA, United StatesHQ recorded Nov 5, 2026	201-500	944 contacts →
	Exact match “Data Systems Analysts (DSA) is a mission technology company.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9	Security 101	Exact match	West Palm Beach, TN, United StatesHQ recorded Nov 5, 2026	501-1,000	927 contacts →
	Exact match “Security 101® is a nationwide leader in designing, installing, and maintaining advanced security systems tailored to the unique needs of organizations of all sizes.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10	Quantum SKY	Exact match	Reston, VA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	921 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 · Nov 5, 2026 · View company records in RevenueBase
11	Telos Corporation	Exact match	Ashburn, VA, United StatesHQ recorded Nov 5, 2026	501-1,000	676 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 · Nov 5, 2026 · View company records in RevenueBase
12	Dragos, INC	Exact match	Hanover, MD, United StatesHQ recorded Nov 5, 2026	501-1,000	670 contacts →
	Exact match “Dragos provides the most effective OT cybersecurity technology for industrial and critical infrastructure to deliver on our global mission: to safeguard civilization.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13	Planned Systems International	Exact match	Columbia, VA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	638 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 · Nov 5, 2026 · View company records in RevenueBase
14	Ultraviolet Cyber	Exact match	Mclean, AZ, United StatesHQ recorded Nov 5, 2026	501-1,000	623 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 · Nov 5, 2026 · View company records in RevenueBase
15	Blue Mantis	Exact match	Portsmouth, MA, United StatesHQ recorded Nov 5, 2026	201-500	552 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 · Nov 5, 2026 · View company records in RevenueBase
16	Tista Science And Technology Corporation	Exact match	Rockville, MD, United StatesHQ recorded Nov 5, 2026	1,001-5,000	537 contacts →
	Exact match “Since 2005, TISTA has been a trusted partner with innovative IT solutions for the federal government.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17	Indus Technology, INC	Exact match	San Diego, CA, United StatesHQ recorded Nov 5, 2026	501-1,000	415 contacts →
	Exact match “Inspired Employees.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18	Computer Solutions	Exact match	San Antonio, TX, United StatesHQ recorded Nov 5, 2026	51-200	408 contacts →
	Exact match “Computer Solutions: Trusted Managed IT Services and Cybersecurity Partner in San Antonio, Texas For more than 46 years, Computer Solutions has helped businesses, schools…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19	Macaulay-Brown, Inc. Macb , An Alion Company	Exact match	Dayton, VA, United StatesHQ recorded Nov 5, 2026	1,001-5,000	370 contacts →
	Exact match “For 39 years, MacAulay-Brown, Inc.(MacB), an Alion Company, has been solving many of the Nation’s most complex National Security challenges.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20	US Claro	Exact match	Miramar, FL, United StatesHQ recorded Nov 5, 2026	201-500	356 contacts →
	Exact match “Claro, a subsidiary of América Móvil, is a global integrator with over 20 years of experience and your partner for managing secure-by-design cybersecurity and information…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21	Sentar INC	Exact match	Huntsville, AL, United StatesHQ recorded Nov 5, 2026	201-500	354 contacts →
	Exact match “Sentar, an employee-owned company, is a leading cyber-intelligence solutions provider focused on the National Security sector.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22	Logically	Exact match	Dublin, OH, United StatesHQ recorded Nov 5, 2026	201-500	324 contacts →
	Exact match “Welcome to Logically.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23	Vectorusa	Exact match	Torrance, TX, United StatesHQ recorded Nov 5, 2026	201-500	320 contacts →
	Exact match “As a premier technology solution provider, we design, build, and maintain best-of-breed systems, including networks, security, data center, wireless, cloud, audiovisual, and…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24	Centurum	Exact match	Marlton, VA, United StatesHQ recorded Nov 5, 2026	201-500	294 contacts →
	Exact match “Our core capabilities - Cybersecurity, Systems Integration, Communications and Network Engineering, Software Engineering, Operational and Technical Support, and Information…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25	Markon	Exact match	Falls Church, VA, United StatesHQ recorded Nov 5, 2026	501-1,000	291 contacts →
	Exact match “Markon is the leader across full-spectrum cyber and technology-enabled solutions for the most critical national security priorities.” Recorded in the RevenueBase company graph · Nov 5, 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 infrastructure contractors”. 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 3,171 cybersecurity infrastructure contractors based in the United States

See the full list, filter by size, metro and specialty, and access 26,057 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Cybersecurity infrastructure contractors based in the United States at a glance

As of Nov 5, 2026

37.6%Verified-email coverage

21.9Average contacts per company

1-10Median size (employees)

2.4%Largest-city concentration · New York

Nov 5, 2026Page data refreshed

Companies by employee count

1-10

1,590

11-50

1,067

51-200

375

201-500

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 3,171 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 infrastructure contractors” 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 26,057 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 November 5, 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 infrastructure contractors 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 infrastructure contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many cybersecurity infrastructure contractors are there based in the United States?

RevenueBase identified 3,171 company matches for cybersecurity infrastructure contractors associated with the United States as of November 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?

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

Which city has the most cybersecurity infrastructure contractors?

New York leads with 75 company records, followed by Washington (72) and Houston (59).

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 26,057 professional contacts with verified work emails tracked across these 3,171 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 November 5, 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.