Company lists · Data refreshed September 2026
Top 25 Cybersecurity assessment companies based in Washington, United States
RevenueBase identified 88 cybersecurity assessment companies headquartered in Washington, United States as of September 2026 and tracks 894 professional contacts across them, including 295 with verified work emails. Across the United States, New York is the largest hub for this category (143 companies); Washington has 88.
This list covers cybersecurity assessment companies 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.
The 25 largest cybersecurity assessment companies based in Washington, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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, 2026Thanks. The Data Team will review it. | |||||
| 2 | 106 contacts → | ||||
Partial evidence “ShorePoint recognizes that cybersecurity is the challenge of our generation.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 100 contacts → | ||||
Partial 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, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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, 2026Thanks. The Data Team will review it. | |||||
| 7 | 32 contacts → | ||||
Indirect evidence “Since the inception of cloud computing, we have helped organizations around the world power their business through security and compliance.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 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, 2026Thanks. The Data Team will review it. | |||||
| 9 | 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, 2026Thanks. The Data Team will review it. | |||||
| 10 | 16 contacts → | ||||
Partial evidence “The Efiia Group delivers cybersecurity solutions for Government.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 11 | 11 contacts → | ||||
Indirect evidence “KeyCaliber’s platform enables organizations to prioritize what matters most to reduce cyber risk, improve security posture, and build cyber resilience.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 12 | 10 contacts → | ||||
Indirect evidence “InGuardians, Inc is an independent information security consulting company based in Washington D.C.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 13 | 8 contacts → | ||||
Indirect evidence “See where hackers can breach the companies you care about.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 14 | 8 contacts → | ||||
Partial evidence “Apavo is a mission-driven cybersecurity firm specializing in compliance-heavy security execution and operational security support for DoD and Intelligence Community environments.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 15 | 7 contacts → | ||||
Partial evidence “IOmergent provides cybersecurity advisory services that help growth-stage companies build practical security programs without the overhead of hiring full-time security executives.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 16 | 7 contacts → | ||||
Partial evidence “Annuk Incorporated is a Cybersecurity and Technology consulting services and solutions company.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 17 | 7 contacts → | ||||
Indirect evidence “TPS Cyber provides Information Security Professional services focused on outcomes that Promote Business and Protect your Brand.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 18 | 6 contacts → | ||||
Partial evidence “CyberAssure provides expert cybersecurity services to public and private sector organizations of every size to assure effective information security governance, risk management…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 19 | 5 contacts → | ||||
Partial evidence “CloudByte Group is a managed IT and cybersecurity firm headquartered in McLean, Virginia.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 20 | 5 contacts → | ||||
Partial evidence “Reliant Management Group is an integrated technology operations, cybersecurity, and mission assurance partner for organizations that cannot afford operational failure.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 21 | 5 contacts → | ||||
Partial evidence “Wilson Consulting Group is an innovative global cybersecurity consulting firm headquartered in Washington D.C, with a European office in London, England.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 22 | 4 contacts → | ||||
Indirect evidence “Calano & Associates, Inc.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 23 | 3 contacts → | ||||
Indirect evidence “principia/RAID was founded with a single mission: Help our clients be their most successful, creative, ground-breaking and big-picture selves without having to worry about the…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 24 | 3 contacts → | ||||
Partial evidence “Are you searching for reliable cybersecurity solutions and efficient program operations?” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 25 | 3 contacts → | ||||
Indirect evidence “At nullptr security, we help companies proactively secure their products before attackers find the cracks.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
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 assessment companies. 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 assessment companies.
- Partial evidence
- Its own public description names part of cybersecurity assessment companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name cybersecurity assessment companies. 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 25 of 88 cybersecurity assessment companies based in Washington, United States
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Cybersecurity assessment companies based in Washington, United States at a glance
As of Sep 28, 2026Companies by employee count
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 88 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 assessment companies, 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 assessment companies”. 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 assessment companies), 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 assessment companies, 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, 295 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 assessment companies by metro in the United States
- Cybersecurity assessment companies in New York143
- Cybersecurity assessment companies in Atlanta102
- Cybersecurity assessment companies in Austin98
- Cybersecurity assessment companies in San Francisco88
- Cybersecurity assessment companies in Chicago80
- Cybersecurity assessment companies in Houston80
- Cybersecurity assessment companies in Miami76
- Cybersecurity assessment companies in Tampa75
- Cybersecurity assessment companies in Dallas70
- Cybersecurity assessment companies in San Diego55
- Cybersecurity assessment companies in Boston52
- Cybersecurity assessment companies in Arlington51
- Cybersecurity assessment companies in Los Angeles47
- Cybersecurity assessment companies in Columbia45
- Cybersecurity assessment companies in Las Vegas41
- Cybersecurity assessment companies in Charlotte40
- Cybersecurity assessment companies in Reston40
- Cybersecurity assessment companies in Denver37
- Cybersecurity assessment companies in Orlando36
- Cybersecurity assessment companies in San Antonio36
- Cybersecurity assessment companies in Sheridan35
- Cybersecurity assessment companies in Baltimore34
- Cybersecurity assessment companies in Phoenix34
- Cybersecurity assessment companies in San Jose33
- Cybersecurity assessment companies in Seattle32
- Cybersecurity assessment companies in Alexandria29
- Cybersecurity assessment companies in Wilmington27
- Cybersecurity assessment companies in Dover26
- Cybersecurity assessment companies in Fairfax26
- Cybersecurity assessment companies in Huntsville26
- Cybersecurity assessment companies in Mclean26
- Cybersecurity assessment companies in Plano26
- Cybersecurity assessment companies in Raleigh26
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 assessment companies, 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 assessment companies are there based in Washington, United States?
RevenueBase identified 88 cybersecurity assessment companies 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 assessment companies?
New York leads the United States with 143 headquartered companies, followed by Atlanta (102) and Austin (98). Washington has 88.
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 295 verified decision-maker contacts tracked across these 88 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.
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