Company lists · Data refreshed September 2026

Top 24 Cybersecurity service providers based in Dallas, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 10, 2026 126 companies tracked

RevenueBase identified 126 cybersecurity service providers headquartered in Dallas, United States as of September 2026 and tracks 2,862 professional contacts across them, including 1,169 with verified work emails and 1,106 with mobile numbers. New York is the largest hub.

This list covers cybersecurity service providers headquartered in Dallas, 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 10, 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 10, 2026 86% judged on-target in blind review

126Companies

2,862Contacts tracked

1,169Verified emails

1,106Mobile numbers

Explore this list → Free signup · no credit card · 500 free credits

The 24 largest cybersecurity service providers based in Dallas, United States

Ranked by team size

Top 24 of 126 cybersecurity service providers based in Dallas, United States, ranked by team size, largest first. Data refreshed Sep 10, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity 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	GDT	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 10, 2026	501-1,000	1,032 contacts →
	Indirect evidence “As an award-winning, global IT solutions provider, we are changing the nature of transformation.” Source: RevenueBase Database · checked Sep 10, 2026
2	Levelblue	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 10, 2026	1,001-5,000	594 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 10, 2026
3	At&t Cybersecurity	Strong evidence	Dallas, TX, United StatesHQ checked Sep 10, 2026	1,001-5,000	156 contacts →
	Strong evidence “AT & T Cybersecurity’s Edge-to-Edge technologies provide phenomenal threat intelligence, collaborative defense, security without the seams, and solutions that fit your business.” Source: RevenueBase Database · checked Sep 10, 2026
4	Sq1 Security	Strong evidence	Dallas, TX, United StatesHQ checked Sep 10, 2026	201-500	154 contacts →
	Strong evidence “SQ1 Security is a global cybersecurity leader offering end-to-end cybersecurity and compliance solution.” Source: RevenueBase Database · checked Sep 10, 2026
5	Configure, INC	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 10, 2026	201-500	89 contacts →
	Indirect evidence “At Configure, we don’t just connect networks, we connect people, ideas, and possibilities.” Source: RevenueBase Database · checked Sep 10, 2026
6	Zyston LLC	Strong evidence	Dallas, TX, United StatesHQ checked Sep 10, 2026	51-200	70 contacts →
	Strong evidence “Zyston is a next‑generation cybersecurity partner dedicated to helping organizations stay one step ahead of threats.” Source: RevenueBase Database · checked Sep 10, 2026
7	Apollo Information Systems	Strong evidence	Dallas, TX, United StatesHQ checked Sep 10, 2026	51-200	64 contacts →
	Strong evidence “Apollo Information Systems delivers intelligence-led cybersecurity solutions for government agencies, educational institutions, and enterprises.” Source: RevenueBase Database · checked Sep 10, 2026
8	Oaktruss Group	Strong evidence	Dallas, TX, United StatesHQ checked Sep 10, 2026	51-200	52 contacts →
	Strong evidence “OakTruss Group is an advisory firm focused on helping organizations operate securely at the intersection of cybersecurity, AI, and data.” Source: RevenueBase Database · checked Sep 10, 2026
9	Solcyber	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 10, 2026	51-200	25 contacts →
	Indirect evidence “SolCyber, a Forgepoint company, is the first modern MSSP to deliver a curated stack of enterprise strength security tools and services that are streamlined, accessible and…” Source: RevenueBase Database · checked Sep 10, 2026
10	Modo Networks, LLC	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 10, 2026	11-50	23 contacts →
	Indirect evidence “As a Managed Service Provider (MSP), we specialize in providing top-notch IT support and solutions to small and medium-sized businesses.” Source: RevenueBase Database · checked Sep 10, 2026
11	White Rock Cybersecurity	Strong evidence	Dallas, TX, United StatesHQ checked Sep 10, 2026	11-50	16 contacts →
	Strong evidence “Established in 2013, White Rock Cybersecurity is a Value Added Reseller that focuses on delivering innovative, scalable, and manageable solutions in information technology.” Source: RevenueBase Database · checked Sep 10, 2026
12	Upstart Cyber	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 10, 2026	11-50	15 contacts →
	Indirect evidence “At Upstart Cyber, we bring the expertise gained from government and large-scale businesses to organizations of all sizes.” Source: RevenueBase Database · checked Sep 10, 2026
13	ITECS	Strong evidence	Dallas, TX, United StatesHQ checked Sep 10, 2026	11-50	13 contacts →
	Strong evidence “ITECS is a Dallas-based managed IT services provider delivering IT support, cybersecurity, cloud, and AI consulting to businesses across Dallas–Fort Worth since 2002.” Source: RevenueBase Database · checked Sep 10, 2026
14	Willow Bend Systems	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 10, 2026	11-50	12 contacts →
	Indirect evidence “Willow Bend Systems is a trusted IT partner for organizations across the Dallas–Fort Worth Metroplex and North Texas that want technology to support their business, not complicate…” Source: RevenueBase Database · checked Sep 10, 2026
15	Progressive IT Solutions	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 10, 2026	1-10	10 contacts →
	Indirect evidence “We are like an “easy button” for your IT Department!” Source: RevenueBase Database · checked Sep 10, 2026
16	Cloudavize-Dallas IT Company	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 10, 2026	1-10	9 contacts →
	Indirect evidence “Cloudavize, established in 2019, is a trusted Managed Service Provider which provides reliable and secure IT services for small and midsize businesses in the Dallas-Fort Worth…” Source: RevenueBase Database · checked Sep 10, 2026
17	Technoxi	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 10, 2026	11-50	9 contacts →
	Indirect evidence “Technoxi isn't your average IT company, and we never wanted to be.” Source: RevenueBase Database · checked Sep 10, 2026
18	Dallas IT Company Velocity IT	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 10, 2026	11-50	8 contacts →
	Indirect evidence “Welcome to Velocity IT, your premier Dallas IT Company dedicated to delivering cutting-edge solutions and unparalleled IT services.” Source: RevenueBase Database · checked Sep 10, 2026
19	Bonelli Systems	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 10, 2026	11-50	7 contacts →
	Indirect evidence “Bonelli Systems is a dynamic Managed Services Provider (MSP) based in Dallas, TX, specializing in secure, streamlined IT solutions for small to mid-sized businesses and legal…” Source: RevenueBase Database · checked Sep 10, 2026
20	Phoenix IT Advisors LLC	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 10, 2026	11-50	7 contacts →
	Indirect evidence “Did you know that the IT Industry is completely unregulated?” Source: RevenueBase Database · checked Sep 10, 2026
21	Black Belt Secure	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 10, 2026	1-10	6 contacts →
	Indirect evidence “We are security engineers with over 20 years of experience working in the DFW Metroplex.” Source: RevenueBase Database · checked Sep 10, 2026
22	TTR Technology	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 10, 2026	11-50	6 contacts →
	Indirect evidence “TTR Technology Provides Complete Managed IT support and Cyber Security Solution to businesses Nationwide, our Mission is to efficiently manage, monitor, and optimize IT…” Source: RevenueBase Database · checked Sep 10, 2026
23	Gtsaas	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 10, 2026	51-200	6 contacts →
	Indirect evidence “GTSaaS stands for Global Technology Sales-as-a-Service.” Source: RevenueBase Database · checked Sep 10, 2026
24	Cybase Risk Management	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 10, 2026	1-10	6 contacts →
	Indirect evidence “CyBase Risk is a catalyst cyber risk management consulting firm, dedicated to empowering small and medium-sized businesses (SMBs) with insight and roadmaps to proactively protect…” Source: RevenueBase Database · checked Sep 10, 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 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 cybersecurity service providers.
Partial evidence: Its own public description names part of cybersecurity service providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity 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 24 of 126 cybersecurity service providers based in Dallas, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,169 reachable decision-makers.

Free signup · no credit card

View the full list →

Cybersecurity service providers based in Dallas, United States at a glance

As of Sep 10, 2026

40.8%Verified-email coverage

38.6%Mobile-number coverage

22.7Average contacts per company

11-50Median size (employees)

216.7%Largest-city concentration · New York

Sep 10, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 12.0d

1,0700–30

9331–60

061–90

190–180

5180+

Company record updated

Median 54.0d

00–30

1,56031–60

89261–90

26290–180

148180+

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 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 Dallas, United States whose own description of what they do matches “cybersecurity 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 cybersecurity 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 cybersecurity service providers, and records with no verified work email. Companies headquartered outside Dallas 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, 1,169 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 10, 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 service providers by metro in the United States

Cybersecurity service providers in New York273
Cybersecurity service providers in Houston165
Cybersecurity service providers in Miami146
Cybersecurity service providers in Washington144
Cybersecurity service providers in Atlanta144
Cybersecurity service providers in Austin143
Cybersecurity service providers in Dallas129

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 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 cybersecurity service providers are there based in Dallas, United States?

RevenueBase identified 126 cybersecurity service providers headquartered in Dallas, 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?

GDT, headquartered in Dallas, tops this list with the largest team on record.

Which city has the most cybersecurity service providers?

New York leads with 273 headquartered companies, followed by Houston (165) and Miami (146).

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 1,169 verified decision-maker contacts tracked across these 126 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 10, 2026.

Ready to reach these companies? Verified emails and direct dials for all 126 cybersecurity service providers based in Dallas, United States. Start with a free account, no credit card.

Download this list →

Related lists

Cybersecurity service providers by geography

Browse the directory

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.