Company lists · Data refreshed September 2026

Top 25 Defense contractor cybersecurity services based in Columbia, United States

Name: Defense contractor cybersecurity services based in Columbia, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 63 companies tracked

RevenueBase identified 63 defense contractor cybersecurity services headquartered in Columbia, United States as of September 2026 and tracks 2,462 professional contacts across them, including 792 with verified work emails. Across the United States, Washington is the largest hub for this category (115 companies); Columbia has 63.

This list covers defense contractor cybersecurity services 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 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

63Companies

2,462Contacts tracked

792Verified emails

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The 25 largest defense contractor cybersecurity services based in Columbia, United States

Ranked by team size

Top 25 of 63 defense contractor cybersecurity services based in Columbia, United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to defense contractor cybersecurity 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	Planned Systems International	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 28, 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 28, 2026
2	Systems Engineering Group	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 28, 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 28, 2026
3	Sealing Technologies, A Parsons Company	Strong evidence	Columbia, MD, United StatesHQ checked Sep 28, 2026	51-200	119 contacts →
	Strong 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 28, 2026
4	Synergy ECP	Partial evidence	Columbia, MD, United StatesHQ checked Sep 28, 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 28, 2026
5	Silveredge Government Solutions	Strong evidence	Columbia, MD, United StatesHQ checked Sep 28, 2026	201-500	88 contacts →
	Strong 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 28, 2026
6	Quotient	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 28, 2026	51-200	87 contacts →
	Indirect evidence “Quotient Inc.” Source: RevenueBase Database · checked Sep 28, 2026
7	RED Alpha	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 28, 2026	51-200	75 contacts →
	Indirect evidence “We are always striving to "Bring Digital Transformation to the Fight".” Source: RevenueBase Database · checked Sep 28, 2026
8	Chiron Technology Services, INC	Partial evidence	Columbia, MD, United StatesHQ checked Sep 28, 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 28, 2026
9	Jasint Innovative Solutions	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 28, 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 28, 2026
10	Applied Network Solutions, INC	Partial evidence	Columbia, MD, United StatesHQ checked Sep 28, 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 28, 2026
11	Clear Ridge Defense	Strong evidence	Columbia, MD, United StatesHQ checked Sep 28, 2026	51-200	57 contacts →
	Strong 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 28, 2026
12	The Kenjya-Trusant Group LLC	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 28, 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 28, 2026
13	Visual Connections Sdvosb	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 28, 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 28, 2026
14	Constellation Technologies, INC	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 28, 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 28, 2026
15	Cyberpoint International	Partial evidence	Columbia, MD, United StatesHQ checked Sep 28, 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 28, 2026
16	2hb Incorporated	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 28, 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 28, 2026
17	SRC Technologies INC	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 28, 2026	51-200	30 contacts →
	Indirect evidence “SRC Technologies, INC provides information technology (IT) consultation services to government agencies and corporations alike, specializing in secure computing services.” Source: RevenueBase Database · checked Sep 28, 2026
18	Columbia Technology Partners	Strong evidence	Columbia, MD, United StatesHQ checked Sep 28, 2026	11-50	22 contacts →
	Strong evidence “Columbia Technology Partners is a National Security and Defense contractor committed to solving intricate and sensitive technology issues which face corporations and federal…” Source: RevenueBase Database · checked Sep 28, 2026
19	Ncyber	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 28, 2026	51-200	19 contacts →
	Indirect evidence “Ncyber ("en-cyber") is a data-driven information security company based in Columbia MD.” Source: RevenueBase Database · checked Sep 28, 2026
20	C2 Technology Solutions INC	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 28, 2026	11-50	19 contacts →
	Indirect evidence “C2 Technology Solutions is a small business with global perspective, offering insightful and transformational expertise to system and software engineering, architecture design…” Source: RevenueBase Database · checked Sep 28, 2026
21	Bytoa, LLC	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 28, 2026	11-50	15 contacts →
	Indirect evidence “At Bytoa, we fuse cutting-edge technology with a warrior’s mindset.” Source: RevenueBase Database · checked Sep 28, 2026
22	Interconnect Defense	Partial evidence	Columbia, MD, United StatesHQ checked Sep 28, 2026	11-50	15 contacts →
	Partial evidence “InterConnect Defense delivers a wide range of expertise to bring together all aspects of Computer Network Operations.” Source: RevenueBase Database · checked Sep 28, 2026
23	Eureka Strategic Consulting	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 28, 2026	11-50	14 contacts →
	Indirect evidence “eureka strategic is a small consulting firm dedicated to discovering and developing solutions to the most difficult problems our customers face.” Source: RevenueBase Database · checked Sep 28, 2026
24	Secure Innovations, LLC	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 28, 2026	51-200	13 contacts →
	Indirect evidence “Our highly-skilled professionals have an average of 20+ years of experience working with, and in, the public sector.” Source: RevenueBase Database · checked Sep 28, 2026
25	Ndepth Security, LLC	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 28, 2026	11-50	10 contacts →
	Indirect evidence “nDepth Security, LLC is a service-oriented, small business that strives to be a profound leader in providing support in all areas of systems engineering, information assurance…” 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: defense contractor cybersecurity 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 defense contractor cybersecurity services.
Partial evidence: Its own public description names part of defense contractor cybersecurity services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name defense contractor cybersecurity 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 25 of 63 defense contractor cybersecurity services based in Columbia, United States

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Defense contractor cybersecurity services based in Columbia, United States at a glance

As of Sep 28, 2026

32.2%Verified-email coverage

39.1Average contacts per company

11-50Median 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 Columbia, so it is reported there. Company counts and contact totals on this page are exact for Columbia, over 63 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 defense contractor cybersecurity 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 Columbia, United States whose own description of what they do matches “defense contractor cybersecurity 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 defense contractor cybersecurity 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 defense contractor cybersecurity services, 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, 792 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.

Defense contractor cybersecurity 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 defense contractor cybersecurity 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 defense contractor cybersecurity services are there based in Columbia, United States?

RevenueBase identified 63 defense contractor cybersecurity services 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?

Planned Systems International, headquartered in Columbia, tops this list with the largest team on record.

Which city in the United States has the most defense contractor cybersecurity services?

Washington leads the United States with 115 headquartered companies, followed by New York (81) and Arlington (76). Columbia has 63.

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 792 verified decision-maker contacts tracked across these 63 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.