Company lists · Data refreshed October 2026

Top 21 Cybersecurity consultancy companies based in Herndon, United States

Name: Cybersecurity consultancy companies based in Herndon, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 1, 2026 31 companies tracked

RevenueBase identified 31 company matches for cybersecurity consultancy companies associated with Herndon, United States as of October 2026 and tracks 954 professional contacts across them, including 257 with verified work emails. Across the United States, New York is the largest hub for this category (272 companies); Herndon has 31.

This list covers company matches for cybersecurity consultancy companies associated with Herndon, 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 October 1, 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 Oct 1, 2026 How this list was built

31Companies

954Contacts tracked

257Verified emails

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The 21 largest cybersecurity consultancy companies based in Herndon, United States

Ranked by team size

Top 21 of 31 company matches for cybersecurity consultancy companies based in Herndon, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 1, 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	Foxhole Technology	Exact match	Herndon, VA, United StatesHQ recorded Oct 1, 2026	51-200	117 contacts →
	Exact match “Foxhole Technology is a thought-leading technology firm offering a robust suite of cybersecurity, software development, systems engineering, and test & evaluation solutions for…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
2	Indigo IT LLC	Exact match	Herndon, VA, United StatesHQ recorded Oct 1, 2026	51-200	101 contacts →
	Exact match “Founded in 2001, Indigo IT is an award winning information technology consulting and services company.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
3	Truestone, LLC	Exact match	Herndon, VA, United StatesHQ recorded Oct 1, 2026	51-200	94 contacts →
	Exact match “Truestone provides full lifecycle, business driven technology and information security-oriented services and solutions across the public and private sectors.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
4	Reston Consulting Group, INC	Exact match	Herndon, VA, United StatesHQ recorded Oct 1, 2026	51-200	65 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
5	Chameleon Consulting Group LLC	Exact match	Herndon, VA, United StatesHQ recorded Oct 1, 2026	51-200	59 contacts →
	Exact match “Chameleon Consulting Group, LLC was founded by a small group of professionals with extensive experience in cyber operations, software engineering, data analysis, and physical…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
6	AVINT	Exact match	Herndon, VA, United StatesHQ recorded Oct 1, 2026	51-200	48 contacts →
	Exact match “Your Vision Achieved.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
7	Athena Technology Group	Exact match	Herndon, VA, United StatesHQ recorded Oct 1, 2026	51-200	45 contacts →
	Exact match “Cyber Security (Vulnerability Assessments, 24/7 Operations, Hunt Teams, Risk Management, Cyber Response) Program Management (Acquisition, Financial, Technology Insertion) System…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
8	Sphinx Solutions INC	Exact match	Herndon, VA, United StatesHQ recorded Oct 1, 2026	11-50	38 contacts →
	Exact match “Sphinx Solutions is an entrepreneurial cyber security company that helps private- and public-sector organizations take advantage of solutions that match today’s security…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
9	Network Depot	Exact match	Herndon, VA, United StatesHQ recorded Oct 1, 2026	51-200	34 contacts →
	Exact match “Network Depot has been serving the DC Metro area since 1991, providing technical support and cybersecurity consulting.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
10	Rssi Onezero Solutions	Exact match	Herndon, VA, United StatesHQ recorded Oct 1, 2026	51-200	33 contacts →
	Exact match “In October 2021, OneZero Solutions, LCC (OneZero), a leading federal cybersecurity and IT solutions provider, announced its acquisition of Right-Sized Solutions Inc.(RSSi), a…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
11	Roka Security, LLC	Exact match	Herndon, VA, United StatesHQ recorded Oct 1, 2026	11-50	27 contacts →
	Exact match “Roka Security, LLC is a computer security firm located in the Washington D.C.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
12	IP Network Solutions	Exact match	Herndon, VA, United StatesHQ recorded Oct 1, 2026	51-200	26 contacts →
	Exact match “At IPNS, we work exclusively in the Federal marketplace, providing agencies in the Civilian, Defense and Intelligence communities with advanced IT systems solutions and…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
13	Iosentrix	Exact match	Herndon, VA, United StatesHQ recorded Oct 1, 2026	11-50	13 contacts →
	Exact match “ioSENTRIX is a Cybersecurity Consulting firm.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
14	Anthony Timbers LLC	Exact match	Herndon, VA, United StatesHQ recorded Oct 1, 2026	1-10	11 contacts →
	Exact match “After years of experience working with the Federal Government, it is apparent that cybersecurity is not operating at its highest potential.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
15	Myturn	Exact match	Herndon, VA, United StatesHQ recorded Oct 1, 2026	1-10	4 contacts →
	Exact match “Here at MyTurn, we're a cybersecurity company committed to the advancement of our industry by reducing the "cybersecurity talent gap".” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
16	Aristi Technologies, INC	Exact match	Herndon, VA, United StatesHQ recorded Oct 1, 2026	1-10	4 contacts →
	Exact match “Aristi is a cybersecurity firm based in the Washington DC metro area.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
17	Best Systems	Exact match	Herndon, VA, United StatesHQ recorded Oct 1, 2026	1-10	3 contacts →
	Exact match “BEST Systems is a IT Consultant company with a focus on e-commerce, digital marketing services, Business Process Outsourcing, Cyber Security and DevSecOps.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
18	519 Consulting	Exact match	Herndon, VA, United StatesHQ recorded Oct 1, 2026	1-10	3 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
19	Tek-Star Corporation	Exact match	Herndon, VA, United StatesHQ recorded Oct 1, 2026	51-200	2 contacts →
	Exact match “At TEK-STAR Corporation, we provide a wide range of IT services and consulting expertise to address your organization’s technological needs.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
20	IIT	Exact match	Herndon, VA, United StatesHQ recorded Oct 1, 2026	11-50	1 contacts →
	Exact match “Information & Infrastructure Technologies Corporation (IIT) is an American information security, technology services and defense consultancy founded in 1997.” Recorded in the RevenueBase company graph · Oct 1, 2026 · View company records in RevenueBase
21	Ramwreck Consulting LLC	Exact match	Herndon, United StatesHQ recorded Oct 1, 2026	1-10	1 contacts →
	Exact match “RamWreck consulting provides information security and cloud architecture services to various organizations.” Recorded in the RevenueBase company graph · Oct 1, 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 consultancy companies”. 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 21 of 31 cybersecurity consultancy companies based in Herndon, United States

See the full list, filter by size, metro and specialty, and access 257 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Cybersecurity consultancy companies based in Herndon, United States at a glance

As of Oct 1, 2026

26.9%Verified-email coverage

30.8Average contacts per company

11-50Median size (employees)

Oct 1, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 31 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 Herndon, United States whose business descriptions match “cybersecurity consultancy companies” 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 257 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 October 1, 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 consultancy companies 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 consultancy companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many cybersecurity consultancy companies are there based in Herndon, United States?

RevenueBase identified 31 company matches for cybersecurity consultancy companies associated with Herndon, United States as of October 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?

Foxhole Technology 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 consultancy companies?

New York leads the United States with 272 company records, followed by Washington (166) and Houston (153). Herndon has 31.

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 257 professional contacts with verified work emails tracked across these 31 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 October 1, 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.