Company lists · Data refreshed September 2026

Top 24 Cybersecurity companies for professional services based in Dallas, United States

Name: Cybersecurity companies for professional services based in Dallas, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 138 companies tracked

RevenueBase identified 138 company matches for cybersecurity companies for professional services associated with Dallas, United States as of September 2026 and tracks 1,874 professional contacts across them, including 723 with verified work emails. Across the United States, New York is the largest hub for this category (311 companies); Dallas has 138.

This list covers company matches for cybersecurity companies for professional services associated with Dallas, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 28, 2026 How this list was built

138Companies

1,874Contacts tracked

723Verified emails

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The 24 largest cybersecurity companies for professional services based in Dallas, United States

Ranked by team size

Top 24 of 138 company matches for cybersecurity companies for professional services based in Dallas, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Levelblue	Exact match	Dallas, TX, United StatesHQ recorded Sep 28, 2026	1,001-5,000	594 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2	At&t Cybersecurity	Exact match	Dallas, TX, United StatesHQ recorded Sep 28, 2026	1,001-5,000	156 contacts →
	Exact match “AT & T Cybersecurity’s Edge-to-Edge technologies provide phenomenal threat intelligence, collaborative defense, security without the seams, and solutions that fit your business.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3	Sq1 Security	Exact match	Dallas, TX, United StatesHQ recorded Sep 28, 2026	201-500	154 contacts →
	Exact match “SQ1 Security is a global cybersecurity leader offering end-to-end cybersecurity and compliance solution.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4	Configure, INC	Exact match	Dallas, TX, United StatesHQ recorded Sep 28, 2026	201-500	89 contacts →
	Exact match “At Configure, we don’t just connect networks, we connect people, ideas, and possibilities.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5	Zyston LLC	Exact match	Dallas, TX, United StatesHQ recorded Sep 28, 2026	51-200	70 contacts →
	Exact match “Zyston is a next‑generation cybersecurity partner dedicated to helping organizations stay one step ahead of threats.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6	Apollo Information Systems	Exact match	Dallas, TX, United StatesHQ recorded Sep 28, 2026	51-200	64 contacts →
	Exact match “Apollo Information Systems delivers intelligence-led cybersecurity solutions for government agencies, educational institutions, and enterprises.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7	Oaktruss Group	Exact match	Dallas, TX, United StatesHQ recorded Sep 28, 2026	51-200	52 contacts →
	Exact match “OakTruss Group is an advisory firm focused on helping organizations operate securely at the intersection of cybersecurity, AI, and data.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8	Romack INC	Exact match	Dallas, TX, United StatesHQ recorded Sep 28, 2026	201-500	27 contacts →
	Exact match “Romack is pleased to offer a unique service for companies that were forced into furloughing their employees during this difficult times.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9	Voluble Systems LLC	Exact match	Dallas, TX, United StatesHQ recorded Sep 28, 2026	51-200	24 contacts →
	Exact match “Voluble Systems LLC.(VOLUBLE) professional services company that provides strategy, custom information technology, information security, consulting, digital, technology…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10	Clover IT	Exact match	Dallas, TX, United StatesHQ recorded Sep 28, 2026	11-50	18 contacts →
	Exact match “Founded in 2011, Clover IT is known as an innovative company, focused on Information Security and Compliance market.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11	Upstart Cyber	Exact match	Dallas, TX, United StatesHQ recorded Sep 28, 2026	11-50	15 contacts →
	Exact match “At Upstart Cyber, we bring the expertise gained from government and large-scale businesses to organizations of all sizes.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12	ITECS	Exact match	Dallas, TX, United StatesHQ recorded Sep 28, 2026	11-50	13 contacts →
	Exact match “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.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13	Paradin Security Solutions	Exact match	Dallas, TX, United StatesHQ recorded Sep 28, 2026	11-50	13 contacts →
	Exact match “Provides unique security solutions, Paradin specializes in a wide range of security services.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14	Willow Bend Systems	Exact match	Dallas, TX, United StatesHQ recorded Sep 28, 2026	11-50	12 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15	Progressive IT Solutions	Exact match	Dallas, TX, United StatesHQ recorded Sep 28, 2026	1-10	10 contacts →
	Exact match “We are like an “easy button” for your IT Department!” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16	Iptalons, INC	Exact match	Dallas, TX, United StatesHQ recorded Sep 28, 2026	1-10	9 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17	Technoxi	Exact match	Dallas, TX, United StatesHQ recorded Sep 28, 2026	11-50	9 contacts →
	Exact match “Technoxi isn't your average IT company, and we never wanted to be.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18	Dallas IT Company Velocity IT	Exact match	Dallas, TX, United StatesHQ recorded Sep 28, 2026	11-50	8 contacts →
	Exact match “Welcome to Velocity IT, your premier Dallas IT Company dedicated to delivering cutting-edge solutions and unparalleled IT services.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19	Bonelli Systems	Exact match	Dallas, TX, United StatesHQ recorded Sep 28, 2026	11-50	7 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20	Phoenix IT Advisors LLC	Exact match	Dallas, TX, United StatesHQ recorded Sep 28, 2026	11-50	7 contacts →
	Exact match “Did you know that the IT Industry is completely unregulated?” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21	Black Belt Secure	Exact match	Dallas, TX, United StatesHQ recorded Sep 28, 2026	1-10	6 contacts →
	Exact match “We are security engineers with over 20 years of experience working in the DFW Metroplex.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22	TTR Technology	Exact match	Dallas, TX, United StatesHQ recorded Sep 28, 2026	11-50	6 contacts →
	Exact match “TTR Technology Provides Complete Managed IT support and Cyber Security Solution to businesses Nationwide, our Mission is to efficiently manage, monitor, and optimize IT…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23	Gtsaas	Exact match	Dallas, TX, United StatesHQ recorded Sep 28, 2026	51-200	6 contacts →
	Exact match “GTSaaS stands for Global Technology Sales-as-a-Service.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24	Cybase Risk Management	Exact match	Dallas, TX, United StatesHQ recorded Sep 28, 2026	1-10	6 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “cybersecurity companies for professional services”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 24 of 138 cybersecurity companies for professional services based in Dallas, United States

See the full list, filter by size, metro and specialty, and access 723 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Cybersecurity companies for professional services based in Dallas, United States at a glance

As of Sep 28, 2026

38.6%Verified-email coverage

13.6Average contacts per company

1-10Median 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 Dallas, so it is reported there. Company counts and contact totals on this page are exact for Dallas, over 138 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Dallas, United States whose business descriptions match “cybersecurity companies for professional services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 723 professional contacts with verified work emails across the full matched dataset. 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.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Cybersecurity companies for professional services by metro in the United States

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “cybersecurity companies for professional services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many cybersecurity companies for professional services are there based in Dallas, United States?

RevenueBase identified 138 company matches for cybersecurity companies for professional services associated with Dallas, United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Levelblue tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most cybersecurity companies for professional services?

New York leads the United States with 311 company records, followed by Houston (167) and Washington (161). Dallas has 138.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 723 professional contacts with verified work emails tracked across these 138 companies; direct dials are available where recorded.

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 SmartSearch, 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.