Company lists · Data refreshed September 2026
Top 23 Security infrastructure consulting companies based in Herndon, United States
RevenueBase identified 38 security infrastructure consulting companies headquartered in Herndon, United States as of September 2026 and tracks 4,161 professional contacts across them, including 359 with verified work emails. Across the United States, New York is the largest hub for this category (244 companies); Herndon has 38.
This list covers security infrastructure consulting companies headquartered in Herndon, 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 29, 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.
The 23 largest security infrastructure consulting companies based in Herndon, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,949 contacts → | ||||
Partial evidence “Paragon Systems employs over 10,500 professionals in specialized operations providing security, fire, investigations, inspections, cybersecurity, risk management, and mission…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,118 contacts → | ||||
Strong evidence “Securitas Critical Infrastructure Services, Inc.(SCIS) is a provider of specialized security and fire services to the highly regulated Nuclear, Aerospace, Defense, Energy, and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 117 contacts → | ||||
Indirect evidence “Foxhole Technology is a thought-leading technology firm offering a robust suite of cybersecurity, software development, systems engineering, and test & evaluation solutions for…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 101 contacts → | ||||
Partial evidence “Founded in 2001, Indigo IT is an award winning information technology consulting and services company.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 94 contacts → | ||||
Partial evidence “Truestone provides full lifecycle, business driven technology and information security-oriented services and solutions across the public and private sectors.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 65 contacts → | ||||
Partial evidence “Network Design * Engineering * Integration * Operations * Security RCG has more than 35 years' experience supporting some of the world's largest and most highly visible IT…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 61 contacts → | ||||
Partial evidence “Integrated Security Technologies designs, integrates, installs and maintains comprehensive solutions for the most complex and important IT, electronic, physical and cyber security…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 59 contacts → | ||||
Partial evidence “Chameleon Consulting Group, LLC was founded by a small group of professionals with extensive experience in cyber operations, software engineering, data analysis, and physical…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 48 contacts → | ||||
Indirect evidence “Your Vision Achieved.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 45 contacts → | ||||
Partial evidence “Cyber Security (Vulnerability Assessments, 24/7 Operations, Hunt Teams, Risk Management, Cyber Response) Program Management (Acquisition, Financial, Technology Insertion) System…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 38 contacts → | ||||
Partial evidence “Sphinx Solutions is an entrepreneurial cyber security company that helps private- and public-sector organizations take advantage of solutions that match today’s security…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 34 contacts → | ||||
Partial evidence “Network Depot has been serving the DC Metro area since 1991, providing technical support and cybersecurity consulting.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 27 contacts → | ||||
Partial evidence “Roka Security, LLC is a computer security firm located in the Washington D.C.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 13 contacts → | ||||
Partial evidence “ioSENTRIX is a Cybersecurity Consulting firm.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 11 contacts → | ||||
Indirect evidence “After years of experience working with the Federal Government, it is apparent that cybersecurity is not operating at its highest potential.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 5 contacts → | ||||
Partial evidence “A leader in security for government contractors, IsI offers end-to-end solutions that simplify the complex.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 4 contacts → | ||||
Indirect evidence “Aristi is a cybersecurity firm based in the Washington DC metro area.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 3 contacts → | ||||
Partial evidence “519 Consulting is a Philadelphia-based IT consulting firm that works closely with our clients to understand and define their specific needs to develop tailored, scalable solutions…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 2 contacts → | ||||
Partial evidence “At TEK-STAR Corporation, we provide a wide range of IT services and consulting expertise to address your organization’s technological needs.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 1 contacts → | ||||
Partial evidence “Westway Enterprises LLC is a transformational security company providing first of its kind security services to the U.S.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 1 contacts → | ||||
Strong evidence “Information & Infrastructure Technologies Corporation (IIT) is an American information security, technology services and defense consultancy founded in 1997.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 1 contacts → | ||||
Strong evidence “RamWreck consulting provides information security and cloud architecture services to various organizations.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 1 contacts → | ||||
Strong evidence “Providing Security Automation and Orchestration solutions and consulting services to organizations small and large.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: security infrastructure consulting companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names security infrastructure consulting companies.
- Partial evidence
- Its own public description names part of security infrastructure consulting companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name security infrastructure consulting companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 23 of 38 security infrastructure consulting companies based in Herndon, United States
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Security infrastructure consulting companies based in Herndon, United States at a glance
As of Sep 29, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for Herndon, so it is reported there. Company counts and contact totals on this page are exact for Herndon, over 38 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 security infrastructure consulting companies, 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 Herndon, United States whose own description of what they do matches “security infrastructure consulting companies”. 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 security infrastructure consulting companies), 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 security infrastructure consulting companies, and records with no verified work email. Companies headquartered outside Herndon 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, 359 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 29, 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.
Security infrastructure consulting companies by metro in the United States
- Security infrastructure consulting companies in New York244
- Security infrastructure consulting companies in Washington158
- Security infrastructure consulting companies in Houston148
- Security infrastructure consulting companies in Atlanta136
- Security infrastructure consulting companies in Dallas131
- Security infrastructure consulting companies in Austin125
- Security infrastructure consulting companies in Miami107
- Security infrastructure consulting companies in Chicago105
- Security infrastructure consulting companies in San Francisco93
- Security infrastructure consulting companies in Los Angeles86
- Security infrastructure consulting companies in Tampa78
- Security infrastructure consulting companies in Arlington76
- Security infrastructure consulting companies in San Diego74
- Security infrastructure consulting companies in Alexandria64
- Security infrastructure consulting companies in Boston63
- Security infrastructure consulting companies in Charlotte63
- Security infrastructure consulting companies in Columbia62
- Security infrastructure consulting companies in Denver62
- Security infrastructure consulting companies in Seattle58
- Security infrastructure consulting companies in Orlando55
- Security infrastructure consulting companies in San Antonio55
- Security infrastructure consulting companies in Reston52
- Security infrastructure consulting companies in Ashburn51
- Security infrastructure consulting companies in Las Vegas49
- Security infrastructure consulting companies in Phoenix49
- Security infrastructure consulting companies in Mclean47
- Security infrastructure consulting companies in Baltimore44
- Security infrastructure consulting companies in Fairfax41
- Security infrastructure consulting companies in Raleigh40
- Security infrastructure consulting companies in Plano39
- Security infrastructure consulting companies in San Jose39
- Security infrastructure consulting companies in Columbus38
- Security infrastructure consulting companies in Huntsville38
- Security infrastructure consulting companies in Scottsdale36
- Security infrastructure consulting companies in Wilmington36
- Security infrastructure consulting companies in Minneapolis35
- Security infrastructure consulting companies in Pittsburgh32
- Security infrastructure consulting companies in Richmond32
- Security infrastructure consulting companies in Indianapolis31
- Security infrastructure consulting companies in Irvine31
- Security infrastructure consulting companies in Portland31
- Security infrastructure consulting companies in Philadelphia29
- Security infrastructure consulting companies in Colorado Springs27
- Security infrastructure consulting companies in Dover26
- Security infrastructure consulting companies in Fort Lauderdale26
- Security infrastructure consulting companies in Vienna26
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 security infrastructure consulting companies, 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 security infrastructure consulting companies are there based in Herndon, United States?
RevenueBase identified 38 security infrastructure consulting companies headquartered in Herndon, 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?
Paragon Systems INC, headquartered in Herndon, tops this list with the largest team on record.
Which city in the United States has the most security infrastructure consulting companies?
New York leads the United States with 244 headquartered companies, followed by Washington (158) and Houston (148). Herndon has 38.
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 359 verified decision-maker contacts tracked across these 38 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 29, 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 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.
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