Company lists · Data refreshed September 2026
Top 16 Network security consultants based in Herndon, United States
RevenueBase identified 25 network security consultants headquartered in Herndon, United States as of September 2026 and tracks 886 professional contacts across them, including 247 with verified work emails. New York is the largest hub.
This list covers network security consultants 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, how directly it supports the match, and when it was last checked. Data refreshed September 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.
The 16 largest network security consultants based in Herndon, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 117 | ||||
“Foxhole Technology is a thought-leading technology firm offering a robust suite of cybersecurity, software development, systems engineering, and test & evaluation solutions for…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 101 | ||||
“Founded in 2001, Indigo IT is an award winning information technology consulting and services company.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | 94 | ||||
“Truestone provides full lifecycle, business driven technology and information security-oriented services and solutions across the public and private sectors.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 65 | ||||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | 59 | ||||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | 48 | ||||
“Your Vision Achieved.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 45 | ||||
“Cyber Security (Vulnerability Assessments, 24/7 Operations, Hunt Teams, Risk Management, Cyber Response) Program Management (Acquisition, Financial, Technology Insertion) System…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | Sphinx Solutions INCPartial evidence | 38 | |||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | Network DepotPartial evidence | 34 | |||
“Network Depot has been serving the DC Metro area since 1991, providing technical support and cybersecurity consulting.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | Roka Security, LLCPartial evidence | 27 | |||
“Roka Security, LLC is a computer security firm located in the Washington D.C.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | 13 | ||||
“ioSENTRIX is a Cybersecurity Consulting firm.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | 11 | ||||
“After years of experience working with the Federal Government, it is apparent that cybersecurity is not operating at its highest potential.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | 4 | ||||
“Aristi is a cybersecurity firm based in the Washington DC metro area.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | 3 | ||||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | Tek-Star CorporationIndirect evidence | 2 | |||
“At TEK-STAR Corporation, we provide a wide range of IT services and consulting expertise to address your organization’s technological needs.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | IITStrong evidence | 1 | |||
“Information & Infrastructure Technologies Corporation (IIT) is an American information security, technology services and defense consultancy founded in 1997.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 16 of 25 network security consultants based in Herndon, United States
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Network security consultants based in Herndon, United States at a glance
As of Sep 5, 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 Herndon, over 25 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 network security consultants, 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 Herndon, United States whose own description of what they do matches “network security consultants”. 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 network security consultants, 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 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, 247 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 5, 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.
Network security consultants by metro in the United States
- Network security consultants in New York170
- Network security consultants in Houston116
- Network security consultants in Atlanta109
- Network security consultants in Washington105
- Network security consultants in Dallas100
- Network security consultants in Austin97
- Network security consultants in Chicago96
- Network security consultants in Miami87
- Network security consultants in Tampa79
- Network security consultants in San Francisco66
- Network security consultants in San Diego63
- Network security consultants in Los Angeles57
- Network security consultants in Charlotte55
- Network security consultants in Boston54
- Network security consultants in Arlington53
- Network security consultants in Denver51
- Network security consultants in Columbia49
- Network security consultants in Seattle43
- Network security consultants in Alexandria41
- Network security consultants in Las Vegas40
- Network security consultants in Phoenix40
- Network security consultants in Reston40
- Network security consultants in San Antonio40
- Network security consultants in Orlando39
- Network security consultants in Raleigh39
- Network security consultants in Mclean37
- Network security consultants in Sheridan36
- Network security consultants in Baltimore35
- Network security consultants in Ashburn34
- Network security consultants in Fairfax32
- Network security consultants in Wilmington30
- Network security consultants in Columbus29
- Network security consultants in San Jose29
- Network security consultants in Scottsdale28
- Network security consultants in Huntsville27
- Network security consultants in Minneapolis27
- Network security consultants in Plano27
- Network security consultants in Colorado Springs25
- Network security consultants in Dover25
- Network security consultants in Herndon25
- Network security consultants in Portland25
Frequently asked
How many network security consultants are there based in Herndon, United States?
RevenueBase identified 25 network security consultants 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?
Foxhole Technology, headquartered in Herndon, tops this list with the largest team on record.
Which city has the most network security consultants?
New York leads with 170 headquartered companies, followed by Houston (116) and Atlanta (109).
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 247 verified decision-maker contacts tracked across these 25 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 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.
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