Company lists · Data refreshed September 2026

Top 23 Cybersecurity consulting service providers based in Mclean, United States

RevenueBase identified 42 cybersecurity consulting service providers headquartered in Mclean, United States as of September 2026 and tracks 1,960 professional contacts across them, including 724 with verified work emails. New York is the largest hub.

This list covers cybersecurity consulting service providers headquartered in Mclean, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 14, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 14, 2026 86% judged on-target in blind review
42Companies
1,960Contacts tracked
724Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 23 largest cybersecurity consulting service providers based in Mclean, United States

Ranked by team size
Top 23 of 42 cybersecurity consulting service providers based in Mclean, United States, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity consulting service providers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceMclean, VA, United StatesHQ checked Sep 14, 2026501-1,000523 contacts →

Indirect evidence

“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…”

Source: RevenueBase Database · checked Sep 14, 2026
2Indirect evidenceMclean, VA, United StatesHQ checked Sep 14, 20261,001-5,000447 contacts →

Indirect evidence

“At Xcelerate, safeguarding the nation isn’t just a mission-it’s our obsession.”

Source: RevenueBase Database · checked Sep 14, 2026
3Partial evidenceMclean, VA, United StatesHQ checked Sep 14, 2026201-500152 contacts →

Partial evidence

“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.”

Source: RevenueBase Database · checked Sep 14, 2026
4Indirect evidenceMclean, VA, United StatesHQ checked Sep 14, 202651-200152 contacts →

Indirect evidence

“NDi is a Verified Service-Disabled Veteran Owned Small Business [SDVOSB] professional services firm, supporting Federal and Commercial customers since 1995.”

Source: RevenueBase Database · checked Sep 14, 2026
5Partial evidenceMclean, VA, United StatesHQ checked Sep 14, 202651-200135 contacts →

Partial evidence

“Easy Dynamics Corporation is a leading technology services provider with a core focus in Cybersecurity, Cloud Computing, and Information Sharing.”

Source: RevenueBase Database · checked Sep 14, 2026
6Indirect evidenceMclean, VA, United StatesHQ checked Sep 14, 202651-200107 contacts →

Indirect evidence

“Saliense is a high-end Technology Solutions provider based out of Tysons Corner, VA.”

Source: RevenueBase Database · checked Sep 14, 2026
7Indirect evidenceMclean, VA, United StatesHQ checked Sep 14, 202651-200103 contacts →

Indirect evidence

“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…”

Source: RevenueBase Database · checked Sep 14, 2026
8Partial evidenceMclean, VA, United StatesHQ checked Sep 14, 202651-20053 contacts →

Partial evidence

“BreakPoint Labs, a Valiant Solutions Company, delivers offensive and defensive cybersecurity to the Department of War, federal agencies, and commercial organizations.”

Source: RevenueBase Database · checked Sep 14, 2026
9Indirect evidenceMclean, VA, United StatesHQ checked Sep 14, 202651-20032 contacts →

Indirect evidence

“Some missions can't fail.”

Source: RevenueBase Database · checked Sep 14, 2026
10Partial evidenceMclean, VA, United StatesHQ checked Sep 14, 202611-5031 contacts →

Partial evidence

“Squadra Solutions delivers expert cybersecurity architecture, engineering, and advisory services to federal agencies, enterprises, and higher education institutions.”

Source: RevenueBase Database · checked Sep 14, 2026
11Indirect evidenceMclean, VA, United StatesHQ checked Sep 14, 202611-5021 contacts →

Indirect evidence

“Digital Global Connectors, LLC, is a Woman Owned Small Business that provides Cyber Security and Information Assurance services to the Federal and Private sectors, with core…”

Source: RevenueBase Database · checked Sep 14, 2026
12Indirect evidenceMclean, VA, United StatesHQ checked Sep 14, 202611-5013 contacts →

Indirect evidence

“bladestack.io brings cloud expertise, technology and innovative approaches which empower your organization to capitalize on the promise of digital transformation.”

Source: RevenueBase Database · checked Sep 14, 2026
13Indirect evidenceMclean, VA, United StatesHQ checked Sep 14, 202611-5010 contacts →

Indirect evidence

“Experts in Cyber Security focusing on assessment, compliance, FedRAMP advisory, and IT and OT penetration testing.”

Source: RevenueBase Database · checked Sep 14, 2026
14Indirect evidenceMclean, VA, United StatesHQ checked Sep 14, 202611-508 contacts →

Indirect evidence

“The Shattuck Group is a cyber security engineering firm that specializes in protecting workloads from insider threats.”

Source: RevenueBase Database · checked Sep 14, 2026
15Indirect evidenceMclean, VA, United StatesHQ checked Sep 14, 202611-505 contacts →

Indirect evidence

“Most organizations believe they're protected.”

Source: RevenueBase Database · checked Sep 14, 2026
16Indirect evidenceMclean, VA, United StatesHQ checked Sep 14, 202611-503 contacts →

Indirect evidence

“H3O Labs is headquartered in VA with offices in McLean and Fairfax.”

Source: RevenueBase Database · checked Sep 14, 2026
17Partial evidenceMclean, VA, United StatesHQ checked Sep 14, 202611-503 contacts →

Partial evidence

“SecureITSM – Defense-Grade CMMC Compliance, Cybersecurity & Managed Service Provider (MSP) for Federal Contractors SecureITSM is a veteran-led cybersecurity partner helping DoD…”

Source: RevenueBase Database · checked Sep 14, 2026
18Partial evidenceMclean, VA, United StatesHQ checked Sep 14, 202611-503 contacts →

Partial evidence

“DMG delivers digital transformation solutions at the intersection of data, cybersecurity, and cloud.”

Source: RevenueBase Database · checked Sep 14, 2026
19Strong evidenceMclean, VA, United StatesHQ checked Sep 14, 202611-502 contacts →

Strong evidence

“We're an innovative technology firm in the cybersecurity and digital transformation space, with disciplines in IT Solutions, Mission Support and Consulting for both federal…”

Source: RevenueBase Database · checked Sep 14, 2026
20Indirect evidenceMclean, VA, United StatesHQ checked Sep 14, 20261-102 contacts →

Indirect evidence

“Formmi Inc is comprised of a team of highly experienced professionals who have implemented and managed processes, programs and operations in the areas of: • Information Security…”

Source: RevenueBase Database · checked Sep 14, 2026
21Partial evidenceMclean, VA, United StatesHQ checked Sep 14, 20261-102 contacts →

Partial evidence

“Tyger Solutions Corporation (TSC) is an Information Technology (IT) consulting firm specializing in Information Security, custom technology designs, systems integration, and…”

Source: RevenueBase Database · checked Sep 14, 2026
22Partial evidenceMclean, VA, United StatesHQ checked Sep 14, 20261-101 contacts →

Partial evidence

“Maximum Justice Cybersecurity helps organizations make AI, cybersecurity, cloud, and enterprise-technology decisions they can defend.”

Source: RevenueBase Database · checked Sep 14, 2026
23Partial evidenceMclean, VA, United StatesHQ checked Sep 14, 20261-101 contacts →

Partial evidence

“Metavance Solutions is a management consulting and information technology services company serving clients in the private and public sectors.”

Source: RevenueBase Database · checked Sep 14, 2026

Showing 23 of 42 cybersecurity consulting service providers based in Mclean, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 724 reachable decision-makers.

Free signup · no credit card

View the full list →

Cybersecurity consulting service providers based in Mclean, United States at a glance

As of Sep 14, 2026
36.9%Verified-email coverage
46.7Average contacts per company
11-50Median size (employees)
673.8%Largest-city concentration · New York
Sep 14, 2026Page data refreshed

Companies by employee count

1-10
9
11-50
21
51-200
7
201-500
1
501-1,000
1
1,001-5,000
2
10001+
1

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 42 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among cybersecurity consulting service providers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Mclean, United States whose own description of what they do matches “cybersecurity consulting service providers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names cybersecurity consulting service providers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among cybersecurity consulting service providers, and records with no verified work email. Companies headquartered outside Mclean are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 724 across the full list. 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 14, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Cybersecurity consulting service providers by metro in the United States

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names cybersecurity consulting service providers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many cybersecurity consulting service providers are there based in Mclean, United States?

RevenueBase identified 42 cybersecurity consulting service providers headquartered in Mclean, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Ultraviolet Cyber, headquartered in Mclean, tops this list with the largest team on record.

Which city has the most cybersecurity consulting service providers?

New York leads with 283 headquartered companies, followed by Houston (181) and Washington (173).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 724 verified decision-maker contacts tracked across these 42 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 14, 2026.

Ready to reach these companies? Verified emails and direct dials for all 42 cybersecurity consulting service providers based in Mclean, United States. Start with a free account, no credit card.

Download this list →

Related lists

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 Smart Search, 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.