Company lists · Data refreshed September 2026
Top 12 Information security companies based in Mclean, United States
RevenueBase identified 28 information security companies headquartered in Mclean, United States as of September 2026 and tracks 475 professional contacts across them, including 245 with verified work emails. New York is the largest hub.
This list covers information security companies 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, how directly it supports the match, and when it was last checked. Data refreshed September 3, 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.
The 12 largest information security companies based in Mclean, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | Valiant SolutionsStrong evidence | 156 | |||
“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: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 2 | SalienseIndirect evidence | 106 | |||
“Saliense is a high-end Technology Solutions provider based out of Tysons Corner, VA.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 3 | 31 | ||||
“Some missions can't fail.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 4 | SquadraIndirect evidence | 29 | |||
“Squadra Solutions delivers expert cybersecurity architecture, engineering, and advisory services to federal agencies, enterprises, and higher education institutions.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 5 | 20 | ||||
“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: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 6 | Techicon, INCPartial evidence | 10 | |||
“Experts in Cyber Security focusing on assessment, compliance, FedRAMP advisory, and IT and OT penetration testing.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 7 | The Shattuck GroupPartial evidence | 8 | |||
“The Shattuck Group is a cyber security engineering firm that specializes in protecting workloads from insider threats.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 8 | 3 | ||||
“H3O Labs is headquartered in VA with offices in McLean and Fairfax.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 9 | SecureitsmPartial evidence | 3 | |||
“is a trusted cybersecurity and compliance partner helping organizations strengthen their security posture and meet complex regulatory requirements.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 10 | 2 | ||||
“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: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 11 | Tyger Solutions CorporationStrong evidence | 2 | |||
“Tyger Solutions Corporation (TSC) is an Information Technology (IT) consulting firm specializing in Information Security, custom technology designs, systems integration, and…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 12 | Maximum Justice CybersecurityIndirect evidence | 1 | |||
“MJC performs in-depth research to help businesses make decisions on technology upgrades.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
Showing 12 of 28 information security companies based in Mclean, United States
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Information security companies based in Mclean, United States at a glance
As of Sep 3, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Mclean, over 28 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 information security companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “information security companies”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among information security companies, 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 an evidence 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, 245 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 3, 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.
Information security companies by metro in the United States
- Information security companies in New York172
- Information security companies in Houston102
- Information security companies in Atlanta98
- Information security companies in Miami98
- Information security companies in Washington95
- Information security companies in Austin93
- Information security companies in Chicago90
- Information security companies in Dallas88
- Information security companies in San Francisco82
- Information security companies in Tampa74
- Information security companies in San Diego59
- Information security companies in Los Angeles57
- Information security companies in Arlington53
- Information security companies in Charlotte51
- Information security companies in Boston49
- Information security companies in Denver49
- Information security companies in Orlando48
- Information security companies in Columbia47
- Information security companies in San Antonio41
- Information security companies in Las Vegas40
- Information security companies in Phoenix37
- Information security companies in Seattle36
- Information security companies in Reston34
- Information security companies in Alexandria33
- Information security companies in Scottsdale32
- Information security companies in Baltimore29
- Information security companies in Fairfax29
- Information security companies in Raleigh29
- Information security companies in Sheridan29
- Information security companies in Huntsville28
- Information security companies in Mclean28
- Information security companies in Pittsburgh28
- Information security companies in San Jose28
- Information security companies in Wilmington28
- Information security companies in Ashburn25
- Information security companies in Columbus25
- Information security companies in Minneapolis25
Frequently asked
How many information security companies are there based in Mclean, United States?
RevenueBase identified 28 information security companies 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?
Valiant Solutions, headquartered in Mclean, tops this list with the largest team on record.
Which city has the most information security companies?
New York leads with 172 headquartered companies, followed by Houston (102) and Atlanta (98).
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 245 verified decision-maker contacts tracked across these 28 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 3, 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.
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