Company lists · Data refreshed September 2026

Top 25 Cybersecurity contractors based in Columbia, United States

Name: Cybersecurity contractors based in Columbia, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 109 companies tracked

RevenueBase identified 109 cybersecurity contractors headquartered in Columbia, United States as of September 2026 and tracks 4,787 professional contacts across them, including 1,445 with verified work emails. New York is the largest hub.

This list covers cybersecurity contractors headquartered in Columbia, 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 21, 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 21, 2026 86% judged on-target in blind review

109Companies

4,787Contacts tracked

1,445Verified emails

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The 25 largest cybersecurity contractors based in Columbia, United States

Ranked by team size

Top 25 of 109 cybersecurity contractors based in Columbia, United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity 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	Huntress	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	501-1,000	696 contacts →
	Indirect evidence “Protect Your Endpoints, Identities, Logs, and Employees.” Source: RevenueBase Database · checked Sep 21, 2026
2	Planned Systems International	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	1,001-5,000	611 contacts →
	Indirect evidence “Since 1988, PSI teams have provided our government customers with innovative, cost effective solutions that solve today’s complex challenges, improve operational efficiencies, and…” Source: RevenueBase Database · checked Sep 21, 2026
3	Vc3	Partial evidence	Columbia, SC, United StatesHQ checked Sep 21, 2026	501-1,000	495 contacts →
	Partial evidence “VC3 is a managed IT and cybersecurity services provider serving organizations throughout the US and Canada.” Source: RevenueBase Database · checked Sep 21, 2026
4	Intelligenesis LLC	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	51-200	121 contacts →
	Indirect evidence “IntelliGenesis delivers AI, cyber, data, and workforce capabilities for national security and high-consequence environments.” Source: RevenueBase Database · checked Sep 21, 2026
5	Systems Engineering Group	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	51-200	119 contacts →
	Indirect evidence “Founded in 1991, and Headquartered in Columbia, MD, Systems Engineering Group, Inc.(SEG) is a wholly-owned subsidiary of Astrion.” Source: RevenueBase Database · checked Sep 21, 2026
6	Sealing Technologies, A Parsons Company	Partial evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	51-200	119 contacts →
	Partial evidence “SealingTech, a Parsons Company, rapidly delivers innovative, agile cybersecurity solutions that modernize, protect, and defend the networks and systems of the federal government…” Source: RevenueBase Database · checked Sep 21, 2026
7	Synergy ECP	Partial evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	201-500	106 contacts →
	Partial evidence “Welcome to Synergy ECP, the most trusted partner in navigating the complex landscape of cybersecurity and digital transformation.” Source: RevenueBase Database · checked Sep 21, 2026
8	Advanced Programs, INC	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	51-200	102 contacts →
	Indirect evidence “Embark on a mission with Advanced Programs, Inc,(API) – where innovation meets impact!” Source: RevenueBase Database · checked Sep 21, 2026
9	Silveredge Government Solutions	Partial evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	201-500	88 contacts →
	Partial evidence “SilverEdge, An SAIC Company, is a next generation provider of innovative and proprietary cybersecurity, software, and intelligence solutions for the Defense and Intelligence…” Source: RevenueBase Database · checked Sep 21, 2026
10	RED Alpha	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	51-200	75 contacts →
	Indirect evidence “We are always striving to "Bring Digital Transformation to the Fight".” Source: RevenueBase Database · checked Sep 21, 2026
11	Sourcefire, Part Of Cisco	Partial evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	501-1,000	63 contacts →
	Partial evidence “Sourcefire, Inc.(Nasdaq:FIRE), a world leader in intelligent cybersecurity solutions, is transforming the way global mid- to large-size organizations and government agencies…” Source: RevenueBase Database · checked Sep 21, 2026
12	Chiron Technology Services, INC	Partial evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	51-200	59 contacts →
	Partial evidence “Chiron Technology Services is a cybersecurity and mission-support company delivering advanced cyber operations training, workforce development, engineering services, and…” Source: RevenueBase Database · checked Sep 21, 2026
13	Jasint Innovative Solutions	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	51-200	58 contacts →
	Indirect evidence “JASINT is a Maryland based Limited Liability Company that began its business operations and staffing in July 2007.” Source: RevenueBase Database · checked Sep 21, 2026
14	Applied Network Solutions, INC	Partial evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	51-200	57 contacts →
	Partial evidence “We operate at the intersection of network engineering and cybersecurity, providing secure, scalable, and high-performing architectures for our customers.” Source: RevenueBase Database · checked Sep 21, 2026
15	Envieta Systems LLC	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	11-50	57 contacts →
	Indirect evidence “Envieta’s mission is to secure our clients' systems through hardware, software and cryptographic expertise.” Source: RevenueBase Database · checked Sep 21, 2026
16	Clear Ridge Defense	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	51-200	57 contacts →
	Indirect evidence “Clear Ridge Defense, headquartered in Columbia, MD, is a boutique cyberspace operations defense contracting firm that specializes in acquiring full-spectrum cyberspace talent in…” Source: RevenueBase Database · checked Sep 21, 2026
17	The Kenjya-Trusant Group LLC	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	51-200	56 contacts →
	Indirect evidence “KTG is an SBA-verified Service-Disabled, Veteran-Owned Small Business with more than two decades of proven success supporting the United States, federal, state, and local…” Source: RevenueBase Database · checked Sep 21, 2026
18	Visual Connections Sdvosb	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	51-200	55 contacts →
	Indirect evidence “Whether you’re seeking IT solutions or telecommunications and cabling, Visual Connections offers a spectrum of services to meet the needs of government and commercial clients.” Source: RevenueBase Database · checked Sep 21, 2026
19	Technology Advancement Center TAC	Partial evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	11-50	54 contacts →
	Partial evidence “Technology Advancement Center (TAC) is a nonprofit fueling the people and technology needed to solve critical cybersecurity and defense technology challenges.” Source: RevenueBase Database · checked Sep 21, 2026
20	Constellation Technologies, INC	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	51-200	53 contacts →
	Indirect evidence “Constellation Technologies, Inc.(CTI) provides cyber engineers, integrators, administrators and experts that have the right blending of experiences and multi-spectral knowledge…” Source: RevenueBase Database · checked Sep 21, 2026
21	Reflexive Concepts	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	51-200	40 contacts →
	Indirect evidence “Reflexive Concepts is a Baltimore-based small business dedicated to providing the Intelligence Community, Department of Defense, and industry partners with top-tier technology…” Source: RevenueBase Database · checked Sep 21, 2026
22	Edwards Performance Solutions	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	51-200	39 contacts →
	Indirect evidence “Edwards Performance Solutions helps clients improve operational performance by finding ways to improve productivity, profitability, and security.” Source: RevenueBase Database · checked Sep 21, 2026
23	Secom Security	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	11-50	37 contacts →
	Indirect evidence “A trusted security partner for over 20 years, Secom provides state-of-the-art security solutions to commercial properties, government, religious institutions, and schools and…” Source: RevenueBase Database · checked Sep 21, 2026
24	Cyberpoint International	Partial evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	51-200	34 contacts →
	Partial evidence “CyberPoint is dedicated to advancing the discipline of cybersecurity through imagination, technical excellence, and an unparalleled passion for our work.” Source: RevenueBase Database · checked Sep 21, 2026
25	2hb Incorporated	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 21, 2026	11-50	33 contacts →
	Indirect evidence “2HB Software Design, Inc, d/b/a 2HB Incorporated, was founded in 1994 and has established itself as a premier service provider for over 29+ years supporting the intelligence…” Source: RevenueBase Database · checked Sep 21, 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 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 cybersecurity contractors.
Partial evidence: Its own public description names part of cybersecurity contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity 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 25 of 109 cybersecurity contractors based in Columbia, United States

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Cybersecurity contractors based in Columbia, United States at a glance

As of Sep 21, 2026

30.2%Verified-email coverage

43.9Average contacts per company

11-50Median size (employees)

268.8%Largest-city concentration · New York

Sep 21, 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 Columbia, so it is reported there. Company counts and contact totals on this page are exact for Columbia, over 109 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 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 Columbia, United States whose own description of what they do matches “cybersecurity 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 cybersecurity 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 cybersecurity contractors, and records with no verified work email. Companies headquartered outside Columbia 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, 1,445 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 21, 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 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 cybersecurity 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 cybersecurity contractors are there based in Columbia, United States?

RevenueBase identified 109 cybersecurity contractors headquartered in Columbia, 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?

Huntress, headquartered in Columbia, tops this list with the largest team on record.

Which city has the most cybersecurity contractors?

New York leads with 293 headquartered companies, followed by Washington (220) and Austin (170).

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 1,445 verified decision-maker contacts tracked across these 109 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 21, 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.