Company lists · Data refreshed September 2026

Top 24 Cybersecurity companies for professional services based in Washington, United States

Name: Cybersecurity companies for professional services 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 161 companies tracked

RevenueBase identified 161 cybersecurity companies for professional services headquartered in Washington, United States as of September 2026 and tracks 1,819 professional contacts across them, including 686 with verified work emails. Across the United States, New York is the largest hub for this category (294 companies); Washington has 161.

This list covers cybersecurity companies for professional services 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

161Companies

1,819Contacts tracked

686Verified emails

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The 24 largest cybersecurity companies for professional services based in Washington, United States

Ranked by team size

Top 24 of 161 cybersecurity companies for professional services 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 cybersecurity companies for professional services: 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	Illuminate Technologies	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	110 contacts →
	Indirect evidence “Illuminate provides government agencies, commercial enterprises, and network operators with the data, services, and technology that helps them protect the information that…” Source: RevenueBase Database · checked Sep 28, 2026
2	Shorepoint INC	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	n/a	106 contacts →
	Partial evidence “ShorePoint recognizes that cybersecurity is the challenge of our generation.” Source: RevenueBase Database · checked Sep 28, 2026
3	Arlo Solutions	Strong evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	100 contacts →
	Strong 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
4	Adlumin	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	95 contacts →
	Partial evidence “Adlumin, an N-able company, provides enterprise-grade cybersecurity for organizations of all sizes through its innovative Security Operations as a Service platform.” Source: RevenueBase Database · checked Sep 28, 2026
5	First Health Advisory	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	91 contacts →
	Partial evidence “First Health Advisory partners with healthcare and government organizations to strengthen cybersecurity strategy, build operational resilience, and safeguard patient care.” Source: RevenueBase Database · checked Sep 28, 2026
6	ACI Federal	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	201-500	87 contacts →
	Indirect evidence “ACI Federal™ is an award-winning ISO/IEC 27001 (InfoSec), ISO 9001(QMS) Certified, focused on National Security and Cyber Security Initiatives.” Source: RevenueBase Database · checked Sep 28, 2026
7	Tsymmetry	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	79 contacts →
	Indirect evidence “You need more than a contractor.” Source: RevenueBase Database · checked Sep 28, 2026
8	Redlattice, INC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	501-1,000	75 contacts →
	Indirect evidence “REDLattice™ is a U.S-owned global defense tech company delivering preeminent digital access for its customers within the global intelligence community, law enforcement, and…” Source: RevenueBase Database · checked Sep 28, 2026
9	TDI Tetrad Digital Integrity	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	71 contacts →
	Partial evidence “For over 20 years, TDI’s one and only passion has been delivering cybersecurity solutions to effectively manage the business of cyber.” Source: RevenueBase Database · checked Sep 28, 2026
10	The Chertoff Group	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	67 contacts →
	Indirect evidence “The Chertoff Group is a global leader in security.” Source: RevenueBase Database · checked Sep 28, 2026
11	FWG Solutions	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	66 contacts →
	Indirect evidence “FWG Solutions is an award-winning firm certified by the SBA as an 8(a) that was founded in 2012.” Source: RevenueBase Database · checked Sep 28, 2026
12	Celerium	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	39 contacts →
	Indirect evidence “Celerium powers active cyber defense solutions to help organizations detect, prevent, and contain data breaches.” Source: RevenueBase Database · checked Sep 28, 2026
13	Avid Systems LLC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	39 contacts →
	Indirect evidence “Avid Systems LLC is a woman-owned Information Technology Services firm based in Washington, DC, with over 20 years of proven expertise in delivering transformative IT solutions.” Source: RevenueBase Database · checked Sep 28, 2026
14	Jsoc It, INC	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	28 contacts →
	Partial evidence “At JSOC IT, we don’t just offer cybersecurity solutions-we build resilient, secure environments tailored to your business needs.” Source: RevenueBase Database · checked Sep 28, 2026
15	Ip-Plus Consulting, INC	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	26 contacts →
	Partial evidence “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: RevenueBase Database · checked Sep 28, 2026
16	Good Harbor Security Risk Management	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	24 contacts →
	Partial evidence “Good Harbor Security Risk Management, LLC advises Boards, CEOs, CISOs and other corporate executives, investment professionals, and government leaders on managing cyber risk.” Source: RevenueBase Database · checked Sep 28, 2026
17	Biztec	Indirect evidence	Washington, WV, United StatesHQ checked Sep 28, 2026	51-200	23 contacts →
	Indirect evidence “Biztec helps organizations simplify technology, strengthen security, and operate with confidence.” Source: RevenueBase Database · checked Sep 28, 2026
18	Practical Solutions, INC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	22 contacts →
	Indirect evidence “Practical Solutions, Inc.(PSI) was founded on the principle that successful organizations have a balanced operation of technology, engineering, and management.” Source: RevenueBase Database · checked Sep 28, 2026
19	JRH Consultants	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	20 contacts →
	Indirect evidence “JRH Consultants is an Information Technology company that provides cost effective services and solutions in Operations Management, Cyber Security Services, Cloud Integration and…” Source: RevenueBase Database · checked Sep 28, 2026
20	Kglobal NOW Rogerco	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	51-200	18 contacts →
	Indirect evidence “kglobal is now part of ROGERCO.” Source: RevenueBase Database · checked Sep 28, 2026
21	The Teneo Group	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	16 contacts →
	Indirect evidence “Keeping your operations moving and your network secure is our priority because we know that’s your priority.” Source: RevenueBase Database · checked Sep 28, 2026
22	Asc3nd Technologies Group	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	16 contacts →
	Indirect evidence “Helping U.S.” Source: RevenueBase Database · checked Sep 28, 2026
23	The Efiia Group	Partial evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	16 contacts →
	Partial evidence “The Efiia Group delivers cybersecurity solutions for Government.” Source: RevenueBase Database · checked Sep 28, 2026
24	Inguardians, INC	Indirect evidence	Washington, DC, United StatesHQ checked Sep 28, 2026	11-50	10 contacts →
	Indirect evidence “InGuardians, Inc is an independent information security consulting company based in Washington D.C.” 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: cybersecurity companies for professional services. 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 cybersecurity companies for professional services.
Partial evidence: Its own public description names part of cybersecurity companies for professional services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity companies for professional services. 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 161 cybersecurity companies for professional services based in Washington, United States

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Cybersecurity companies for professional services based in Washington, United States at a glance

As of Sep 28, 2026

37.7%Verified-email coverage

11.3Average 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

10001+

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 161 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 cybersecurity companies for professional services, 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 “cybersecurity companies for professional services”. 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 cybersecurity companies for professional services), 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 cybersecurity companies for professional services, 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, 686 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.

Cybersecurity companies for professional services 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 cybersecurity companies for professional services, 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 cybersecurity companies for professional services are there based in Washington, United States?

RevenueBase identified 161 cybersecurity companies for professional services 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?

Illuminate Technologies, headquartered in Washington, tops this list with the largest team on record.

Which city in the United States has the most cybersecurity companies for professional services?

New York leads the United States with 294 headquartered companies, followed by Houston (167) and Washington (161).

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 686 verified decision-maker contacts tracked across these 161 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.