Company lists · Data refreshed September 2026

Top 25 Intelligence and security services based in Arlington, United States

Name: Intelligence and security services based in Arlington, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 87 companies tracked

RevenueBase identified 87 intelligence and security services headquartered in Arlington, United States as of September 2026 and tracks 2,326 professional contacts across them, including 916 with verified work emails. Washington is the largest hub.

This list covers intelligence and security services headquartered in Arlington, 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 4, 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 HQ checked on every row Match evidence on every row Refreshed Sep 4, 2026 86% judged on-target in blind review

87Companies

2,326Contacts tracked

916Verified emails

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The 25 largest intelligence and security services based in Arlington, United States

Ranked by team size

Top 25 of 87 intelligence and security services based in Arlington, United States, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names intelligence and security services: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	DEXISPartial evidence	Arlington, VA, United StatesHQ checked Sep 4, 2026	51-200	302
	“Dexis is a mission-driven security analytics company that helps U.S.” Source: company website · checked Sep 4, 2026
2	Redhorse CorporationIndirect evidence	Arlington, VA, United StatesHQ checked Sep 4, 2026	201-500	288
	“We want to improve the way government interacts with and uses data and technology.” Source: company website · checked Sep 4, 2026
3	Millennium CorporationIndirect evidence	Arlington, VA, United StatesHQ checked Sep 4, 2026	201-500	273
	“For nearly two decades, Millennium Corporation has been operating on the leading edge of cybersecurity.” Source: company website · checked Sep 4, 2026
4	Cydecor, INCPartial evidence	Arlington, VA, United StatesHQ checked Sep 4, 2026	501-1,000	237
	“Cydecor advances national security through innovative end-to-end solutions to our customers around the globe.” Source: company website · checked Sep 4, 2026
5	Strategic Analysis IncorporatedIndirect evidence	Arlington, VA, United StatesHQ checked Sep 4, 2026	201-500	200
	“Strategic Analysis Inc.(SA) is an industry-leading government professional services firm that excels in providing innovative solutions to the problems of today and tomorrow.” Source: company website · checked Sep 4, 2026
6	Techop Solutions InternationalIndirect evidence	Arlington, VA, United StatesHQ checked Sep 4, 2026	51-200	87
	“TechOp Solutions provides technology and operational solutions to senior decision makers in federal, state and local governments, as well as private enterprises who must maintain…” Source: company website · checked Sep 4, 2026
7	Sancorp Consulting, LLCPartial evidence	Arlington, VA, United StatesHQ checked Sep 4, 2026	51-200	60
	“Sancorp Consulting, LLC is focused on providing tailored, professional solutions in the areas of Insider Threat, Artificial Intelligence/Machine Learning, Identity Activities, and…” Source: company website · checked Sep 4, 2026
8	MASYIndirect evidence	Arlington, VA, United StatesHQ checked Sep 4, 2026	51-200	59
	“At MASY, we are committed to excellence in solving your complex challenges and supporting your navigation through a rapidly evolving geopolitical landscape.” Source: company website · checked Sep 4, 2026
9	Tesla Laboratories, INCStrong evidence	Arlington, VA, United StatesHQ checked Sep 4, 2026	11-50	57
	“Tesla Laboratories provides Cyber Security, Intelligence Analysis, Financial Management and Program Management services to the Intelligence Community, the Department of Defense…” Source: company website · checked Sep 4, 2026
10	CybastionIndirect evidence	Arlington, VA, United StatesHQ checked Sep 4, 2026	51-200	56
	“CYBASTION develops robust world-class cybersecurity solutions tailored to suit the needs of different businesses, governments and public sector entities.” Source: company website · checked Sep 4, 2026
11	Metis Solutions, LLCIndirect evidence	Arlington, VA, United StatesHQ checked Sep 4, 2026	501-1,000	48
	“METIS Solutions, now a PAE Company, is a government services provider founded by some of the senior-most leaders in strategic solutions and planning in the defense, homeland…” Source: company website · checked Sep 4, 2026
12	System Planning CorporationIndirect evidence	Arlington, VA, United StatesHQ checked Sep 4, 2026	51-200	47
	“System Planning Corporation (SPC)’s success supporting U.S.” Source: company website · checked Sep 4, 2026
13	ACI SolutionsIndirect evidence	Arlington, VA, United StatesHQ checked Sep 4, 2026	11-50	42
	“ACI Solutions is a Secure Cloud and Managed Services Provider with U.S headquarters in Arlington, Virginia.” Source: company website · checked Sep 4, 2026
14	SUN ManagementIndirect evidence	Arlington, VA, United StatesHQ checked Sep 4, 2026	11-50	32
	“Sun Management is a customer focused cybersecurity & advanced network solutions firm providing products and services that help solve your most difficult IT challenges.” Source: company website · checked Sep 4, 2026
15	StemboardIndirect evidence	Arlington, VA, United StatesHQ checked Sep 4, 2026	11-50	27
	“STEMBoard is an award-winning technical powerhouse specializing in professional advisory services for elite organizations in the U.S Government.” Source: company website · checked Sep 4, 2026
16	HLINCIndirect evidence	Arlington, VA, United StatesHQ checked Sep 4, 2026	11-50	26
	“Big Business Capability from a Small Business HLinc delivers holistic solutions to our customers’ needs – we develop, integrate, and implement technological solutions, customized…” Source: company website · checked Sep 4, 2026
17	Zeichner Risk Analytics ZRAIndirect evidence	Arlington, VA, United StatesHQ checked Sep 4, 2026	11-50	24
	“For over 20 years, Zeichner Risk Analytics (ZRA) has had small business experience in cybersecurity, risk management, program management, strategic planning and law and policy.” Source: company website · checked Sep 4, 2026
18	GroupsensePartial evidence	Arlington, VA, United StatesHQ checked Sep 4, 2026	11-50	22
	“GroupSense is a digital risk protection services company that delivers customer-specific intelligence that dramatically improves enterprise cybersecurity and fraud-management…” Source: company website · checked Sep 4, 2026
19	CedelisIndirect evidence	Arlington, VA, United StatesHQ checked Sep 4, 2026	11-50	16
	“CEDELIS is an 8(a) Service-Disabled Minority Veteran-Owned Small Business (SDVOSB) that offers innovative IT services to Federal and Civilian agencies, located in the Washington…” Source: company website · checked Sep 4, 2026
20	The Soter GroupIndirect evidence	Arlington, VA, United StatesHQ checked Sep 4, 2026	11-50	15
	“The Soter Group is a small business based in Arlington, Virginia.” Source: company website · checked Sep 4, 2026
21	Pendleton Solutions, LLCIndirect evidence	Arlington, VA, United StatesHQ checked Sep 4, 2026	11-50	15
	“Pendleton Solutions, LLC is a small woman-owned business dedicated to providing U.S.” Source: company website · checked Sep 4, 2026
22	Hancock & Poole Security INCPartial evidence	Arlington, VA, United StatesHQ checked Sep 4, 2026	11-50	11
	“Hancock & Poole Security (HPS) Inc.” Source: company website · checked Sep 4, 2026
23	Dowless & Associates, INCPartial evidence	Arlington, VA, United StatesHQ checked Sep 4, 2026	11-50	11
	“Dowless & Associates was incorporated in Dowless & Associates' competencies include Information and Cyber Security, IT Integration, Organizational Change Management and Integrated…” Source: company website · checked Sep 4, 2026
24	CynnovativeIndirect evidence	Arlington, VA, United StatesHQ checked Sep 4, 2026	11-50	10
	“Cynnovative’s mission: To enable our customers to achieve superiority in the cyber domain by rewriting the laws of cyber and advancing state-of-the-art machine learning and…” Source: company website · checked Sep 4, 2026
25	The Enterprise Security ConsultantsPartial evidence	Arlington, VA, United StatesHQ checked Sep 4, 2026	11-50	7
	“The Enterprise Security Consultants, LLC (dba TES Consultants) is an 8(a) Woman-Owned Small Business (WOSB) delivering industry leading cybersecurity and information technology…” Source: company website · checked Sep 4, 2026

Showing 25 of 87 intelligence and security services based in Arlington, United States

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Intelligence and security services based in Arlington, United States at a glance

As of Sep 4, 2026

11-50Median size (employees)

WashingtonLargest hub · 199 HQs

Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 Arlington, over 87 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 intelligence and security services, 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 Arlington, United States whose own description of what they do matches “intelligence and security services”. 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 intelligence and security services, and records with no verified work email. Companies headquartered outside Arlington 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, 916 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 4, 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.

Intelligence and security services by metro in the United States

Frequently asked

How many intelligence and security services are there based in Arlington, United States?

RevenueBase identified 87 intelligence and security services headquartered in Arlington, 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?

DEXIS, headquartered in Arlington, tops this list with the largest team on record.

Which city has the most intelligence and security services?

Washington leads with 199 headquartered companies, followed by New York (159) and Houston (95).

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 916 verified decision-maker contacts tracked across these 87 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 4, 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.