Company lists · Data refreshed September 2026

Top 25 Cybersecurity contractors based in Mclean, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 77 companies tracked

RevenueBase identified 77 company matches for cybersecurity contractors associated with Mclean, United States as of September 2026 and tracks 7,595 professional contacts across them, including 2,657 with verified work emails. Across the United States, New York is the largest hub for this category (293 companies); Mclean has 77.

This list covers company matches for cybersecurity contractors associated with Mclean, 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 21, 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 21, 2026 How this list was built

77Companies

7,595Contacts tracked

2,657Verified emails

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The 25 largest cybersecurity contractors based in Mclean, United States

Ranked by team size

Top 25 of 77 company matches for cybersecurity contractors based in Mclean, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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	American Systems	Exact match	Mclean, VA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,899 contacts →
	Exact match “Founded in 1975, AMERICAN SYSTEMS is an employee-owned federal government contractor supporting national priority programs through our strategic solutions in the areas of…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2	Agile Defense	Exact match	Mclean, VA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,086 contacts →
	Exact match “Agile Defense: Always Evolving Agile Defense stands at the forefront of innovation, driving advanced capabilities and solutions tailored to the most critical national security and…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3	By Light Professional IT Services	Exact match	Mclean, VA, United StatesHQ recorded Sep 21, 2026	1,001-5,000	559 contacts →
	Exact match “By Light Professional IT Services LLC, headquartered in McLean, VA, is a leading provider of advanced technology solutions delivering cyber and warfighter training platforms for…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4	Ultraviolet Cyber	Exact match	Mclean, VA, United StatesHQ recorded Sep 21, 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 · Sep 21, 2026 · View company records in RevenueBase
5	Xcelerate Solutions	Exact match	Mclean, VA, United StatesHQ recorded Sep 21, 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 · Sep 21, 2026 · View company records in RevenueBase
6	Obxtek	Exact match	Mclean, VA, United StatesHQ recorded Sep 21, 2026	201-500	349 contacts →
	Exact match “OBXtek is a relationship-driven information technology and diversified professional services company.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7	Prescient Edge	Exact match	Mclean, VA, United StatesHQ recorded Sep 21, 2026	201-500	255 contacts →
	Exact match “Prescient Edge is a veteran-owned and managed tier-1 technology integrator, specializing in delivering intelligence-driven solutions that ensure mission-critical success.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8	VMD Corp	Exact match	Mclean, VA, United StatesHQ recorded Sep 21, 2026	501-1,000	254 contacts →
	Exact match “About VMD VMD, now a part of Xcelerate Solutions, is a leading defense and national security company, delivering integrated solutions in enterprise security, strategic consulting…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9	Cybermedia Technologies, LLC Ctec	Exact match	Mclean, VA, United StatesHQ recorded Sep 21, 2026	51-200	223 contacts →
	Exact match “We modernize legacy infrastructure, secure mission-critical systems and design digital experiences that impact millions of federal workers & American citizens every day.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10	Be, INC	Exact match	Mclean, VA, United StatesHQ recorded Sep 21, 2026	201-500	176 contacts →
	Exact match “BE is a trusted partner on missions of vital importance to our customers, the nation and the world.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11	Merlin Cyber	Exact match	Mclean, VA, United StatesHQ recorded Sep 21, 2026	51-200	160 contacts →
	Exact match “Merlin is a powerful ecosystem of cybersecurity investment, innovation, technical expertise, and go-to-market acceleration with 25 years of experience working with the U.S.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12	Valiant Solutions	Exact match	Mclean, VA, United StatesHQ recorded Sep 21, 2026	201-500	152 contacts →
	Exact match “Valiant Solutions, LLC stands out as a premier provider of Cybersecurity and IT services aiding the Federal Government in staying ahead of complex information security challenges.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13	Network Designs, INC	Exact match	Mclean, VA, United StatesHQ recorded Sep 21, 2026	51-200	152 contacts →
	Exact match “NDi is a Verified Service-Disabled Veteran Owned Small Business [SDVOSB] professional services firm, supporting Federal and Commercial customers since 1995.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14	Easy Dynamics Corp	Exact match	Mclean, VA, United StatesHQ recorded Sep 21, 2026	51-200	135 contacts →
	Exact match “Easy Dynamics Corporation is a leading technology services provider with a core focus in Cybersecurity, Cloud Computing, and Information Sharing.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15	Saliense	Exact match	Mclean, VA, United StatesHQ recorded Sep 21, 2026	51-200	107 contacts →
	Exact match “Saliense is a high-end Technology Solutions provider based out of Tysons Corner, VA.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16	CRI	Exact match	Mclean, VA, United StatesHQ recorded Sep 21, 2026	51-200	103 contacts →
	Exact match “Communications Resource, Inc.(CRI) is a minority and Woman-Owned Small Business with over 30 years of focused security performance supporting over 40 government and commercial…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17	Advanced Technology Systems Company	Exact match	Mclean, VA, United StatesHQ recorded Sep 21, 2026	51-200	90 contacts →
	Exact match “Advanced Technology Systems Co.(ATSC) is a privately held US Defense contractor headquartered just outside of Washington D.C.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18	Moxfive	Exact match	Mclean, VA, United StatesHQ recorded Sep 21, 2026	51-200	61 contacts →
	Exact match “MOXFIVE is cybersecurity company helping organizations respond to incidents and minimize the risk of future attacks.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19	West 4th Strategy, LLC	Exact match	Mclean, VA, United StatesHQ recorded Sep 21, 2026	51-200	58 contacts →
	Exact match “West 4th, now strengthened by the acquisition of Integrated Systems (ISI), delivers rapid response technology services and mission-focused solutions to civilian, defense, and…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20	OCT Consulting LLC	Exact match	Mclean, VA, United StatesHQ recorded Sep 21, 2026	51-200	57 contacts →
	Exact match “OCT Consulting LLC is a Small Business providing professional services and information technology solutions to U.S.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21	Breakpoint Labs	Exact match	Mclean, VA, United StatesHQ recorded Sep 21, 2026	51-200	53 contacts →
	Exact match “BreakPoint Labs, a Valiant Solutions Company, delivers offensive and defensive cybersecurity to the Department of War, federal agencies, and commercial organizations.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22	Defense Contracting Activity Armed Protective And Intelligence Services	Exact match	Mclean, VA, United StatesHQ recorded Sep 21, 2026	201-500	33 contacts →
	Exact match “DEFENSE CONTRACTING ACTIVITY (DCA), formerly Argus International Risk Services, is a Service-Disabled Veteran Owned Business and multinational corporation.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23	Isenpai, LLC - SBA Wosb	Exact match	Mclean, VA, United StatesHQ recorded Sep 21, 2026	51-200	31 contacts →
	Exact match “iSenpai is a SBA certified Woman Owned Small Business (WOSB) that is doing VERY BIG THINGS - for our customers & for blind kids.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24	Squadra	Exact match	Mclean, VA, United StatesHQ recorded Sep 21, 2026	11-50	31 contacts →
	Exact match “Squadra Solutions delivers expert cybersecurity architecture, engineering, and advisory services to federal agencies, enterprises, and higher education institutions.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25	Runsafe Security INC	Exact match	Mclean, VA, United StatesHQ recorded Sep 21, 2026	11-50	31 contacts →
	Exact match “RunSafe Security protects embedded software across critical infrastructure, delivering automated vulnerability identification and software hardening from build-time to runtime to…” Recorded in the RevenueBase company graph · Sep 21, 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 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 77 cybersecurity contractors based in Mclean, United States

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Cybersecurity contractors based in Mclean, United States at a glance

As of Sep 21, 2026

35.0%Verified-email coverage

98.6Average contacts per company

11-50Median size (employees)

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured across the whole United States list rather than for Mclean, so it is reported there. Company counts and contact totals on this page are exact for Mclean, over 77 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 Mclean, United States whose business descriptions match “cybersecurity 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 2,657 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 21, 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 contractors by metro in the United States

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 contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many cybersecurity contractors are there based in Mclean, United States?

RevenueBase identified 77 company matches for cybersecurity contractors associated with Mclean, 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?

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

Which city in the United States has the most cybersecurity contractors?

New York leads the United States with 293 company records, followed by Washington (220) and Austin (170). Mclean has 77.

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 2,657 professional contacts with verified work emails tracked across these 77 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 21, 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.