Company lists · Data refreshed September 2026

Top 23 Homeland security contractors based in Washington, United States

Name: Homeland security contractors based in Washington, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 56 companies tracked

RevenueBase identified 56 homeland security contractors headquartered in Washington, United States as of September 2026 and tracks 989 professional contacts across them, including 283 with verified work emails. Across the United States, New York is the largest hub for this category (88 companies); Washington has 56.

This list covers homeland security contractors headquartered in Washington, 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

56Companies

989Contacts tracked

283Verified emails

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The 23 largest homeland security contractors based in Washington, United States

Ranked by team size

Top 23 of 56 homeland security contractors based in Washington, United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to homeland security contractors: 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	Arlo Solutions	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	100 contacts →
	Indirect evidence “Arlo Solutions (Arlo), is a Washington, DC professional services company, providing cybersecurity and management consulting services to the US government in the defense…” Source: RevenueBase Database · checked Sep 28, 2026
2	Corner Alliance	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	95 contacts →
	Indirect evidence “Founded in 2007, Corner Alliance is a government consulting firm that serves federal clients primarily in the public safety, emergency management and business intelligence spaces.” Source: RevenueBase Database · checked Sep 28, 2026
3	The Counterterrorism Group	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	89 contacts →
	Indirect evidence “We work to detect, deter, defeat, and destroy terrorism around the world.” Source: RevenueBase Database · checked Sep 28, 2026
4	The Chertoff Group	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	67 contacts →
	Partial evidence “The Chertoff Group is a global leader in security.” Source: RevenueBase Database · checked Sep 28, 2026
5	Colorado Security Agency	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	63 contacts →
	Partial evidence “Established in 1974, Colorado Security Agency (CSA) is a professional security provider based in Georgetown Washington DC.” Source: RevenueBase Database · checked Sep 28, 2026
6	Command Group	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	41 contacts →
	Partial evidence “Command Group is an international security and intelligence consulting firm that provides advisory services to governments, corporations and high net worth individuals.” Source: RevenueBase Database · checked Sep 28, 2026
7	Global Security And Innovative Strategies Gsis	Strong evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	37 contacts →
	Strong evidence “Global Security & Innovative Strategies (GSIS) leverages its extensive private sector, homeland, public security, public sector and international expertise to provide…” Source: RevenueBase Database · checked Sep 28, 2026
8	Prime Source Technologies, LLC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	27 contacts →
	Indirect evidence “Established in 2001, Prime Source Technologies delivers solutions to client problems and enhance productivity by offering emergency management, network engineering and software…” Source: RevenueBase Database · checked Sep 28, 2026
9	Valens Global	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	26 contacts →
	Partial evidence “Valens Global takes a comprehensive, methodical, and thoughtful approach to security.” Source: RevenueBase Database · checked Sep 28, 2026
10	Tecknomic	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	8 contacts →
	Indirect evidence “Tecknomic Inc, established in 2003, is a 8(a) and Hubzone certified firm that specializes in Information Technology (IT) Staffing and Consulting, Telecommunication Solutions…” Source: RevenueBase Database · checked Sep 28, 2026
11	First Watch Strategies & Events	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	6 contacts →
	Indirect evidence “First Watch is a large-scale special event firm committed to working with organizations, agencies, and stakeholders in both the private and public sectors to design and execute…” Source: RevenueBase Database · checked Sep 28, 2026
12	Rebel Global Security	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	4 contacts →
	Partial evidence “Rebel Global Security (RGS) is a Washington-based firm that provides national security advice to the private sector.” Source: RevenueBase Database · checked Sep 28, 2026
13	Cyber Intell Solution	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	4 contacts →
	Indirect evidence “Cyber Intell Solution, LLC (CIS) is an experienced company working in partnership with the Department of Defense (DOD), Intelligence Community,and commercial industry.” Source: RevenueBase Database · checked Sep 28, 2026
14	XK Group	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	4 contacts →
	Partial evidence “XK Group provides advisory services Due Diligence Security Assessments Competitive Intelligence Background Investigations Crisis Management Insider Threat Analysis Fraud…” Source: RevenueBase Database · checked Sep 28, 2026
15	Axios Security Group	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	3 contacts →
	Partial evidence “Axios Security Group (ASG) is a veteran owned and operated Physical and Digital Security Consulting Company.” Source: RevenueBase Database · checked Sep 28, 2026
16	Stratagem Consulting LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	3 contacts →
	Partial evidence “Stratagem Consulting LLC was founded by former FBI senior leaders, partnering with a cadre of national security experts, focused on enabling individuals and organizations to seize…” Source: RevenueBase Database · checked Sep 28, 2026
17	Iscg International Security Consulting Group	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	3 contacts →
	Partial evidence “International Security Consulting Group (ISCG) is a premier US-based security consultancy, driven by a team of dedicated, results-oriented professionals.” Source: RevenueBase Database · checked Sep 28, 2026
18	ALUMA	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	3 contacts →
	Partial evidence “Aluma is a risk management/security advisory firm that specializes in the U.S.” Source: RevenueBase Database · checked Sep 28, 2026
19	Clt3 Consulting, LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	2 contacts →
	Partial evidence “Drawing upon decades of experience protecting US Presidents and influential world leaders, CLT3 Security Consulting provides companies, government entities and individuals with…” Source: RevenueBase Database · checked Sep 28, 2026
20	Emergency Response & Global Security Solutions	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	1 contacts →
	Partial evidence “Emergency Response and Global Security Solutions, LLC (ERGSS) is a premier consulting firm that delivers exceptional professional consulting, training, and services to…” Source: RevenueBase Database · checked Sep 28, 2026
21	Shoreline Risk	Indirect evidence	Washington, United StatesHQ checked Sep 28, 2026	1-10	1 contacts →
	Indirect evidence “Boutique risk management consulting firm serving the public, private, and nonprofit sectors.” Source: RevenueBase Database · checked Sep 28, 2026
22	Night OWL Protective Services, LLC	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	1 contacts →
	Partial evidence “At Night Owl Protective Services we provide common sense, cost effective security protective services for any commercial or residential site in the nation's capital.” Source: RevenueBase Database · checked Sep 28, 2026
23	Vaubanfirm	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	1-10	1 contacts →
	Indirect evidence “Vauban Firm focuses on assessing potential critical infrastructure risks for its public and private sector clients.” 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: homeland security contractors. 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 homeland security contractors.
Partial evidence: Its own public description names part of homeland security contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name homeland security contractors. 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 56 homeland security contractors based in Washington, United States

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Homeland security contractors based in Washington, United States at a glance

As of Sep 28, 2026

28.6%Verified-email coverage

17.7Average contacts per company

1-10Median 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 Washington, so it is reported there. Company counts and contact totals on this page are exact for Washington, over 56 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 homeland security contractors, 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 Washington, United States whose own description of what they do matches “homeland security contractors”. 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 homeland security contractors), 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 homeland security contractors, and records with no verified work email. Companies headquartered outside Washington 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, 283 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.

Homeland security contractors 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 homeland security contractors, 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 homeland security contractors are there based in Washington, United States?

RevenueBase identified 56 homeland security contractors headquartered in Washington, 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?

Arlo Solutions, headquartered in Washington, tops this list with the largest team on record.

Which city in the United States has the most homeland security contractors?

New York leads the United States with 88 headquartered companies, followed by Houston (64) and Los Angeles (58). Washington has 56.

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 283 verified decision-maker contacts tracked across these 56 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.