Company lists · Data refreshed September 2026

Top 22 Application security service providers based in Columbia, United States

Name: Application security service providers based in Columbia, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 14, 2026 47 companies tracked

RevenueBase identified 47 application security service providers headquartered in Columbia, United States as of September 2026 and tracks 619 professional contacts across them, including 112 with verified work emails. New York is the largest hub.

This list covers application security service providers 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 14, 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 14, 2026 86% judged on-target in blind review

47Companies

619Contacts tracked

112Verified emails

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The 22 largest application security service providers based in Columbia, United States

Ranked by team size

Top 22 of 47 application security service providers based in Columbia, United States, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to application security service providers: 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	Sealing Technologies, A Parsons Company	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 14, 2026	51-200	119 contacts →
	Indirect 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 14, 2026
2	Sourcefire, Part Of Cisco	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 14, 2026	501-1,000	63 contacts →
	Indirect 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 14, 2026
3	Envieta Systems LLC	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 14, 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 14, 2026
4	Cyberpoint International	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 14, 2026	51-200	34 contacts →
	Indirect 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 14, 2026
5	SRC Technologies INC	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 14, 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 14, 2026
6	Ncyber	Partial evidence	Columbia, MD, United StatesHQ checked Sep 14, 2026	51-200	19 contacts →
	Partial evidence “Ncyber ("en-cyber") is a data-driven information security company based in Columbia MD.” Source: RevenueBase Database · checked Sep 14, 2026
7	Gliacell Technologies	Partial evidence	Columbia, MD, United StatesHQ checked Sep 14, 2026	11-50	17 contacts →
	Partial evidence “GliaCell Technologies focuses on Software & System Engineering in Enterprise and Cyber Security solution spaces.” Source: RevenueBase Database · checked Sep 14, 2026
8	Secure Innovations, LLC	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 14, 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 14, 2026
9	Ndepth Security, LLC	Partial evidence	Columbia, MD, United StatesHQ checked Sep 14, 2026	11-50	10 contacts →
	Partial 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 14, 2026
10	White Cliffs Consulting, LLC	Partial evidence	Columbia, MD, United StatesHQ checked Sep 14, 2026	51-200	9 contacts →
	Partial evidence “White Cliffs Consulting is a small cyber intelligence and security firm providing high-end consulting and technical services in network analysis, software development and…” Source: RevenueBase Database · checked Sep 14, 2026
11	Cyber Protection Services	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 14, 2026	11-50	8 contacts →
	Indirect evidence “Cyber Protection Services is a certified SDVOSB dedicated to protecting businesses against the cyber threats that evolve daily.” Source: RevenueBase Database · checked Sep 14, 2026
12	Camelot Secure	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 14, 2026	51-200	8 contacts →
	Indirect evidence “Our Secure360 platform is a holistic redefinition of what world-class cybersecurity strategies can be.” Source: RevenueBase Database · checked Sep 14, 2026
13	TBM Technology Consulting, LLC	Partial evidence	Columbia, MD, United StatesHQ checked Sep 14, 2026	1-10	8 contacts →
	Partial evidence “TBM Technology Consulting is a small business established on expertise and experience in developing and implementing cyber solutions with an emphasis on security.” Source: RevenueBase Database · checked Sep 14, 2026
14	Shield 7 Consulting	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 14, 2026	11-50	8 contacts →
	Indirect evidence “Shield 7 operates as a Veteran Owned consulting firm and VAR based in Maryland.” Source: RevenueBase Database · checked Sep 14, 2026
15	Captivator Technologies	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 14, 2026	11-50	4 contacts →
	Indirect evidence “Captivator TECHNOLOGIES is a growing digital solutions provider specializing in delivering innovative and efficient solutions tailored to the needs of businesses and individuals.” Source: RevenueBase Database · checked Sep 14, 2026
16	Trimia, INC	Partial evidence	Columbia, MD, United StatesHQ checked Sep 14, 2026	1-10	3 contacts →
	Partial evidence “We have over 30 years of real world experience in identifying and developing innovative technologies and solutions to help meet our customers Data and Cyber Security challenges.” Source: RevenueBase Database · checked Sep 14, 2026
17	Coefficient Technologies LLC DBA Surveillent Cyber	Partial evidence	Columbia, SC, United StatesHQ checked Sep 14, 2026	1-10	3 contacts →
	Partial evidence “Coefficient Technologies provides the most up-to-date cyber security solutions, strategies, and IT services to help companies defend themselves from known and unknown APTs and…” Source: RevenueBase Database · checked Sep 14, 2026
18	Greysys LLC	Partial evidence	Columbia, MD, United StatesHQ checked Sep 14, 2026	1-10	3 contacts →
	Partial evidence “Greysys LLC is a small information security focused research and development company based in Maryland.” Source: RevenueBase Database · checked Sep 14, 2026
19	Interceptor Cyberops	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 14, 2026	11-50	2 contacts →
	Indirect evidence “Today, data has become the world’s most valuable (and vulnerable) resource.” Source: RevenueBase Database · checked Sep 14, 2026
20	Ramparts Security	Indirect evidence	Columbia, MD, United StatesHQ checked Sep 14, 2026	1-10	2 contacts →
	Indirect evidence “The Ramparts team has over 3 decades of experience performing threat analysis for critical infrastructure and defense systems, and over a decade of experience leading adversarial…” Source: RevenueBase Database · checked Sep 14, 2026
21	Panoptcy Security	Partial evidence	Columbia, SC, United StatesHQ checked Sep 14, 2026	1-10	2 contacts →
	Partial evidence “Panoptcy Security is a cybersecurity firm that combines high-level talent, advanced tools, interdisciplinary models, and data science to advance cyber resiliency.” Source: RevenueBase Database · checked Sep 14, 2026
22	Banshee Cybersecurity LLC	Indirect evidence	Columbia, MO, United StatesHQ checked Sep 14, 2026	1-10	1 contacts →
	Indirect evidence “Many small businesses avoid cybersecurity because they are overwhelmed or by it, or because they feel uncertain, assuming they are protected.” Source: RevenueBase Database · checked Sep 14, 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: application security service providers. 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 application security service providers.
Partial evidence: Its own public description names part of application security service providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name application security service providers. 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 22 of 47 application security service providers based in Columbia, United States

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Application security service providers based in Columbia, United States at a glance

As of Sep 14, 2026

18.1%Verified-email coverage

13.2Average contacts per company

11-50Median size (employees)

272.3%Largest-city concentration · New York

Sep 14, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

501-1,000

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 47 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 application security service providers, 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 “application security service providers”. 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 application security service providers), 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 application security service providers, 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, 112 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 14, 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.

Application security service providers 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 application security service providers, 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 application security service providers are there based in Columbia, United States?

RevenueBase identified 47 application security service providers 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?

Sealing Technologies, A Parsons Company, headquartered in Columbia, tops this list with the largest team on record.

Which city has the most application security service providers?

New York leads with 128 headquartered companies, followed by Austin (90) and Atlanta (86).

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 112 verified decision-maker contacts tracked across these 47 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 14, 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.