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Company lists · Data refreshed September 2026

Top 24 Security consulting firms based in Washington, United States

Compiled by the RevenueBase Data Team Data refreshed Sep 6, 2026 139 companies tracked

RevenueBase identified 139 security consulting firms headquartered in Washington, United States as of September 2026 and tracks 1,330 professional contacts across them, including 405 with verified work emails. New York is the largest hub.

This list covers security consulting firms 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, how directly it supports the match, and when it was last checked. Data refreshed September 6, 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 6, 2026 86% judged on-target in blind review
139Companies
1,330Contacts tracked
405Verified emails
Explore all 139 companies → Free signup · no credit card · 500 free credits

The 24 largest security consulting firms based in Washington, United States

Ranked by team size
Top 24 of 139 security consulting firms based in Washington, United States, ranked by team size, largest first. Data refreshed Sep 6, 2026. Evidence rates how directly each company's own description names security consulting firms: 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.
#CompanyHeadquartersEmployeesContacts
1
Arlo SolutionsPartial evidence
Washington, DC, United StatesHQ checked Sep 6, 202651-200100

“Arlo Solutions (Arlo), is a Washington, DC professional services company, providing cybersecurity and management consulting services to the US government in the defense…”

Source: company website · checked Sep 6, 2026
2
ACI FederalPartial evidence
Washington, DC, United StatesHQ checked Sep 6, 2026201-50087

“ACI Federal™ is an award-winning ISO/IEC 27001 (InfoSec), ISO 9001(QMS) Certified, focused on National Security and Cyber Security Initiatives.”

Source: company website · checked Sep 6, 2026
3
The Chertoff GroupPartial evidence
Washington, DC, United StatesHQ checked Sep 6, 202611-5067

“The Chertoff Group is a global leader in security.”

Source: company website · checked Sep 6, 2026
4
FWG SolutionsIndirect evidence
Washington, DC, United StatesHQ checked Sep 6, 202651-20066

“FWG Solutions is an award-winning firm certified by the SBA as an 8(a) that was founded in 2012.”

Source: company website · checked Sep 6, 2026
5
Colorado Security AgencyPartial evidence
Washington, DC, United StatesHQ checked Sep 6, 202651-20063

“Established in 1974, Colorado Security Agency (CSA) is a professional security provider based in Georgetown Washington DC.”

Source: company website · checked Sep 6, 2026
6
Command GroupStrong evidence
Washington, DC, United StatesHQ checked Sep 6, 202651-20041

“Command Group is an international security and intelligence consulting firm that provides advisory services to governments, corporations and high net worth individuals.”

Source: company website · checked Sep 6, 2026
7
Global Security And Innovative Strategies GsisPartial evidence
Washington, DC, United StatesHQ checked Sep 6, 202611-5037

“Global Security & Innovative Strategies (GSIS) leverages its extensive private sector, homeland, public security, public sector and international expertise to provide…”

Source: company website · checked Sep 6, 2026
8
38north SecurityPartial evidence
Washington, DC, United StatesHQ checked Sep 6, 202611-5032

“Since the inception of cloud computing, we have helped organizations around the world power their business through security and compliance.”

Source: company website · checked Sep 6, 2026
9
Ip-Plus Consulting, INCPartial evidence
Washington, DC, United StatesHQ checked Sep 6, 202611-5026

“iP-PLUS CONSULTING is an IT solutions company that focuses on providing high quality professionals, innovative technical solutions, and delivering exceptional service support to…”

Source: company website · checked Sep 6, 2026
10
Valens GlobalPartial evidence
Washington, DC, United StatesHQ checked Sep 6, 202611-5026

“Valens Global takes a comprehensive, methodical, and thoughtful approach to security.”

Source: company website · checked Sep 6, 2026
11
Good Harbor Security Risk ManagementPartial evidence
Washington, DC, United StatesHQ checked Sep 6, 202611-5024

“Good Harbor Security Risk Management, LLC advises Boards, CEOs, CISOs and other corporate executives, investment professionals, and government leaders on managing cyber risk.”

Source: company website · checked Sep 6, 2026
12
Cambridge Global AdvisorsIndirect evidence
Washington, DC, United StatesHQ checked Sep 6, 202611-5023

“Cambridge Global Advisors (CGA) is a strategic advisory services firm with experience at the global, national, state and local level.”

Source: company website · checked Sep 6, 2026
13
The Teneo GroupIndirect evidence
Washington, DC, United StatesHQ checked Sep 6, 202611-5016

“Keeping your operations moving and your network secure is our priority because we know that’s your priority.”

Source: company website · checked Sep 6, 2026
14
The Efiia GroupIndirect evidence
Washington, DC, United StatesHQ checked Sep 6, 202611-5016

“The Efiia Group delivers cybersecurity solutions for Government.”

Source: company website · checked Sep 6, 2026
15
Personnel Security ProfessionalsPartial evidence
Washington, DC, United StatesHQ checked Sep 6, 20261-1011

“Personnel Security Professionals was started by two veterans who have served as government and contract subject matter experts in Industry and Personnel Security for more than 30…”

Source: company website · checked Sep 6, 2026
16
Deck Prism, LLCIndirect evidence
Washington, DC, United StatesHQ checked Sep 6, 202611-5010

“Deck Prism LLC.”

Source: company website · checked Sep 6, 2026
17
Inguardians, INCStrong evidence
Washington, DC, United StatesHQ checked Sep 6, 202611-5010

“InGuardians, Inc is an independent information security consulting company based in Washington D.C.”

Source: company website · checked Sep 6, 2026
18
TWWIndirect evidence
Washington, DC, United StatesHQ checked Sep 6, 202611-5010

“The Wright Way Enterprises (TWW) is certified as an SBA 8(a) and HUBZone small business and DC Certified Business Enterprise (CBE), stewarding organizations in addressing the…”

Source: company website · checked Sep 6, 2026
19
Emissary LLCIndirect evidence
Washington, DC, United StatesHQ checked Sep 6, 202611-508

“At emissary, we know that maximizing your corporate investment starts with hiring the right talent.”

Source: company website · checked Sep 6, 2026
20
Apavo CorporationPartial evidence
Washington, United StatesHQ checked Sep 6, 202611-508

“Apavo is a mission-driven cybersecurity firm specializing in compliance-heavy security execution and operational security support for DoD and Intelligence Community environments.”

Source: company website · checked Sep 6, 2026
21
Annuk IncorporatedPartial evidence
Washington, DC, United StatesHQ checked Sep 6, 202611-507

“Annuk Incorporated is a Cybersecurity and Technology consulting services and solutions company.”

Source: company website · checked Sep 6, 2026
22
IomergentPartial evidence
Washington, DC, United StatesHQ checked Sep 6, 202611-507

“IOmergent provides cybersecurity advisory services that help growth-stage companies build practical security programs without the overhead of hiring full-time security executives.”

Source: company website · checked Sep 6, 2026
23
TPS CyberPartial evidence
Washington, DC, United StatesHQ checked Sep 6, 202611-507

“TPS Cyber provides Information Security Professional services focused on outcomes that Promote Business and Protect your Brand.”

Source: company website · checked Sep 6, 2026
24
CyberassurePartial evidence
Washington, DC, United StatesHQ checked Sep 6, 202611-506

“CyberAssure provides expert cybersecurity services to public and private sector organizations of every size to assure effective information security governance, risk management…”

Source: company website · checked Sep 6, 2026

Showing 24 of 139 security consulting firms based in Washington, United States

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Security consulting firms based in Washington, United States at a glance

As of Sep 6, 2026
1-10Median size (employees)
New YorkLargest hub · 189 HQs
Contacts with mobile numbers
Sep 6, 2026Data refreshed

Companies by employee count

1-10
72
11-50
47
51-200
12
201-500
4
501-1,000
3
1,001-5,000
1

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 Washington, over 139 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 security consulting firms, 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 Washington, United States whose own description of what they do matches “security consulting firms”. 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 security consulting firms, 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 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, 405 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 6, 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.

Security consulting firms by metro in the United States

Frequently asked

How many security consulting firms are there based in Washington, United States?

RevenueBase identified 139 security consulting firms 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 has the most security consulting firms?

New York leads with 189 headquartered companies, followed by Washington (139) and Houston (124).

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 405 verified decision-maker contacts tracked across these 139 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 6, 2026.

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Related lists

Browse: Companies home · Security consulting firms in United States · All United States lists · All Security consulting firms lists · New lists

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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