Company lists · Data refreshed September 2026

Top 24 Federal cybersecurity firms based in Reston, United States

Name: Federal cybersecurity firms based in Reston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 36 companies tracked

RevenueBase identified 36 federal cybersecurity firms headquartered in Reston, United States as of September 2026 and tracks 3,735 professional contacts across them, including 1,286 with verified work emails. Across the United States, Washington is the largest hub for this category (62 companies); Reston has 36.

This list covers federal cybersecurity firms headquartered in Reston, 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 28, 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 28, 2026 86% judged on-target in blind review

36Companies

3,735Contacts tracked

1,286Verified emails

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The 24 largest federal cybersecurity firms based in Reston, United States

Ranked by team size

Top 24 of 36 federal cybersecurity firms based in Reston, United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to federal cybersecurity firms: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Guidepoint Security	Partial evidence	Reston, VA, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,232 contacts →
	Partial evidence “GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Source: RevenueBase Database · checked Sep 28, 2026
2	Quantum SKY	Partial evidence	Reston, VA, United StatesHQ checked Sep 28, 2026	1,001-5,000	872 contacts →
	Partial evidence “Quantum Sky is a mission technology company that builds secure AI, cyber, cloud, and quantum capabilities for defense, intelligence, and federal civilian agencies.” Source: RevenueBase Database · checked Sep 28, 2026
3	Evolver	Indirect evidence	Reston, VA, United StatesHQ checked Sep 28, 2026	501-1,000	235 contacts →
	Indirect evidence “Founded in Evolver was built on a clear purpose: to help government and enterprise customers achieve long-term success.” Source: RevenueBase Database · checked Sep 28, 2026
4	Fedtec	Strong evidence	Reston, VA, United StatesHQ checked Sep 28, 2026	201-500	231 contacts →
	Strong evidence “FedTec Reply is a leading digital solutions, infrastructure services and cybersecurity provider for federal government agencies.” Source: RevenueBase Database · checked Sep 28, 2026
5	Mindpoint Group, A Quantum SKY Company	Partial evidence	Reston, VA, United StatesHQ checked Sep 28, 2026	1,001-5,000	204 contacts →
	Partial evidence “MindPoint Group, a Quantum Sky company, is a cybersecurity specialist trusted by U.S.” Source: RevenueBase Database · checked Sep 28, 2026
6	Intelligent Waves	Partial evidence	Reston, VA, United StatesHQ checked Sep 28, 2026	51-200	185 contacts →
	Partial evidence “Intelligent Waves, a veteran-owned organization, delivers secure, innovative technology solutions for federal defense and intelligence missions.” Source: RevenueBase Database · checked Sep 28, 2026
7	Zantech	Partial evidence	Reston, VA, United StatesHQ checked Sep 28, 2026	51-200	91 contacts →
	Partial evidence “Zantech delivers advanced technology solutions to US Government agencies, specializing in digital modernization, cybersecurity, and cloud computing for mission-critical operations…” Source: RevenueBase Database · checked Sep 28, 2026
8	Secureit	Partial evidence	Reston, VA, United StatesHQ checked Sep 28, 2026	51-200	77 contacts →
	Partial evidence “SecureIT is a leading provider of cybersecurity management consulting and technical services to government agencies, corporations and non-profit organizations.” Source: RevenueBase Database · checked Sep 28, 2026
9	Fortinet Federal	Partial evidence	Reston, VA, United StatesHQ checked Sep 28, 2026	51-200	70 contacts →
	Partial evidence “Fortinet Federal is dedicated to bringing expertise and commitment to U.S.” Source: RevenueBase Database · checked Sep 28, 2026
10	Axonius Federal Systems	Partial evidence	Reston, VA, United StatesHQ checked Sep 28, 2026	51-200	65 contacts →
	Partial evidence “Axonius Federal Systems (AFS) provides a unified asset inventory and continuous insight into exposures, all while aligning with key mandates like Zero Trust, CDM, FISMA, EO 14028…” Source: RevenueBase Database · checked Sep 28, 2026
11	Global Infotek, INC	Indirect evidence	Reston, VA, United StatesHQ checked Sep 28, 2026	51-200	58 contacts →
	Indirect evidence “Global InfoTek, Inc.(GITI) is a mid-sized, award-winning leader in designing, developing, and deploying cutting-edge technologies that address the nation's most critical cyber and…” Source: RevenueBase Database · checked Sep 28, 2026
12	Stackarmor	Indirect evidence	Reston, VA, United StatesHQ checked Sep 28, 2026	51-200	55 contacts →
	Indirect evidence “stackArmor, a Quantum Sky company, invented the ATO Accelerator category and has enabled 200 + systems to achieve FedRAMP, FISMA, CMMC 2.0, and DOD cATO, all in as little as 40%…” Source: RevenueBase Database · checked Sep 28, 2026
13	Advanced Systems Engineering Corporation Asec , A Part Of Markon	Partial evidence	Reston, VA, United StatesHQ checked Sep 28, 2026	201-500	45 contacts →
	Partial evidence “The ASEC family of companies is now a part of Markon, LLC, a national firm with a federal government focus, specializing in enterprise technology, business operations, and…” Source: RevenueBase Database · checked Sep 28, 2026
14	Volexity	Indirect evidence	Reston, VA, United StatesHQ checked Sep 28, 2026	51-200	44 contacts →
	Indirect evidence “Volexity is a leading provider of threat intelligence and incident suppression services and solutions based in the Washington, DC area.” Source: RevenueBase Database · checked Sep 28, 2026
15	Rogerco, INC	Indirect evidence	Reston, VA, United StatesHQ checked Sep 28, 2026	51-200	35 contacts →
	Indirect evidence “ROGERCO (RCI) is an integrated technology and communications consultancy supporting government and critical infrastructure missions.” Source: RevenueBase Database · checked Sep 28, 2026
16	Knowledge Consulting Group	Partial evidence	Reston, VA, United StatesHQ checked Sep 28, 2026	201-500	29 contacts →
	Partial evidence “Knowledge Consulting Group (KCG) is one of the largest privately held cybersecurity services firms in the United States.” Source: RevenueBase Database · checked Sep 28, 2026
17	Tenacity Solutions Incorporated	Indirect evidence	Reston, VA, United StatesHQ checked Sep 28, 2026	51-200	18 contacts →
	Indirect evidence “Tenacity Provides: Today's service oriented architectures, virtualized servers and increased demand for mobile service have made the difficult problem of securing important…” Source: RevenueBase Database · checked Sep 28, 2026
18	Dark Circuit Labs	Indirect evidence	Reston, VA, United StatesHQ checked Sep 28, 2026	1-10	9 contacts →
	Indirect evidence “Dark Circuit Labs is an offensive cyber security company that provides the highest quality products and services to support the nation’s operational missions.” Source: RevenueBase Database · checked Sep 28, 2026
19	Lalaith Astor Technical Consulting House Latch, LLC	Partial evidence	Reston, VA, United StatesHQ checked Sep 28, 2026	11-50	9 contacts →
	Partial evidence “LATCH is an information technology solution provider serving the federal government, public sector, and national security organizations.” Source: RevenueBase Database · checked Sep 28, 2026
20	Axiom Technologies LLC	Indirect evidence	Reston, VA, United StatesHQ checked Sep 28, 2026	1-10	7 contacts →
	Indirect evidence “Successful businesses today require interactions with the networked world, where threats continuously probe for new ways to obtain your critical information.” Source: RevenueBase Database · checked Sep 28, 2026
21	Sherpa	Partial evidence	Reston, VA, United StatesHQ checked Sep 28, 2026	11-50	2 contacts →
	Partial evidence “Sherpa is a firm led by experts with a deep knowledge on business strategy, digital transformation, cybersecurity, governance, risk & compliance.” Source: RevenueBase Database · checked Sep 28, 2026
22	Empower Solutions	Strong evidence	Reston, VA, United StatesHQ checked Sep 28, 2026	1-10	2 contacts →
	Strong evidence “Empower Solutions is a trusted IT partner that specializes in providing comprehensive IT and cybersecurity solutions to clients across the Federal Government and private sectors.” Source: RevenueBase Database · checked Sep 28, 2026
23	Business Cyber Shield	Indirect evidence	Reston, VA, United StatesHQ checked Sep 28, 2026	11-50	1 contacts →
	Indirect evidence “WHAT WE DO: To put it simply, think of Business Cyber Shield as your virtual Chief Information Security Officer, enabling you to focus on what's important within your organization.” Source: RevenueBase Database · checked Sep 28, 2026
24	Cymantis	Strong evidence	Reston, VA, United StatesHQ checked Sep 28, 2026	1-10	1 contacts →
	Strong evidence “Cymantis is a full-range cybersecurity & Technology Consulting practice specializing in: 1_ Enterprise & Startup Cybersecurity strategy 2_ Federal, financial, & healthcare…” Source: RevenueBase Database · checked Sep 28, 2026

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: federal cybersecurity firms. 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 federal cybersecurity firms.
Partial evidence: Its own public description names part of federal cybersecurity firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name federal cybersecurity firms. 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 24 of 36 federal cybersecurity firms based in Reston, United States

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Federal cybersecurity firms based in Reston, United States at a glance

As of Sep 28, 2026

34.4%Verified-email coverage

103.8Average contacts per company

51-200Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Reston, so it is reported there. Company counts and contact totals on this page are exact for Reston, over 36 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 federal cybersecurity firms, 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 Reston, United States whose own description of what they do matches “federal cybersecurity firms”. 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 federal cybersecurity firms), 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 federal cybersecurity firms, and records with no verified work email. Companies headquartered outside Reston 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, 1,286 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 28, 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.

Federal cybersecurity firms 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 federal cybersecurity firms, 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 federal cybersecurity firms are there based in Reston, United States?

RevenueBase identified 36 federal cybersecurity firms headquartered in Reston, 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?

Guidepoint Security, headquartered in Reston, tops this list with the largest team on record.

Which city in the United States has the most federal cybersecurity firms?

Washington leads the United States with 62 headquartered companies, followed by New York (50) and Atlanta (48). Reston has 36.

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 1,286 verified decision-maker contacts tracked across these 36 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 28, 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.