Company lists · Data refreshed September 2026

Top 20 Cloud infrastructure security services based in Dallas, United States

RevenueBase identified 42 cloud infrastructure security services headquartered in Dallas, United States as of September 2026 and tracks 726 professional contacts across them, including 269 with verified work emails. Across the United States, New York is the largest hub for this category (93 companies); Dallas has 42.

This list covers cloud infrastructure security services 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 27, 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 27, 2026 86% judged on-target in blind review
42Companies
726Contacts tracked
269Verified emails
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The 20 largest cloud infrastructure security services based in Dallas, United States

Ranked by team size
Top 20 of 42 cloud infrastructure security services based in Dallas, United States, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to cloud infrastructure security 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceDallas, TX, United StatesHQ checked Sep 27, 20261,001-5,000156 contacts →

Partial 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 27, 2026
2Partial evidenceDallas, TX, United StatesHQ checked Sep 27, 2026201-500154 contacts →

Partial evidence

“SQ1 Security is a global cybersecurity leader offering end-to-end cybersecurity and compliance solution.”

Source: RevenueBase Database · checked Sep 27, 2026
3Strong evidenceDallas, TX, United StatesHQ checked Sep 27, 202651-20082 contacts →

Strong evidence

“Active Cyber is a cloud consultancy dedicated to Identity Driven Security.”

Source: RevenueBase Database · checked Sep 27, 2026
4Indirect evidenceDallas, TX, United StatesHQ checked Sep 27, 202651-20070 contacts →

Indirect evidence

“Zyston is a next‑generation cybersecurity partner dedicated to helping organizations stay one step ahead of threats.”

Source: RevenueBase Database · checked Sep 27, 2026
5Indirect evidenceDallas, TX, United StatesHQ checked Sep 27, 202651-20064 contacts →

Indirect evidence

“Apollo Information Systems delivers intelligence-led cybersecurity solutions for government agencies, educational institutions, and enterprises.”

Source: RevenueBase Database · checked Sep 27, 2026
6Partial evidenceDallas, TX, United StatesHQ checked Sep 27, 202611-5018 contacts →

Partial evidence

“Founded in 2011, Clover IT is known as an innovative company, focused on Information Security and Compliance market.”

Source: RevenueBase Database · checked Sep 27, 2026
7Indirect evidenceDallas, TX, United StatesHQ checked Sep 27, 202611-5015 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 27, 2026
8Strong evidenceDallas, TX, United StatesHQ checked Sep 27, 202611-5012 contacts →

Strong evidence

“At CoreSpace our cloud experts customize next-generation IT infrastructures for small and medium businesses (IaaS) using OpenStack, Kubernetes and VMware that surpass industry…”

Source: RevenueBase Database · checked Sep 27, 2026
9Strong evidenceDallas, TX, United StatesHQ checked Sep 27, 202611-507 contacts →

Strong evidence

“Guardian monitors, manages and secures our clients cloud and data center infrastructure.”

Source: RevenueBase Database · checked Sep 27, 2026
10Indirect evidenceDallas, TX, United StatesHQ checked Sep 27, 202651-2006 contacts →

Indirect evidence

“GTSaaS stands for Global Technology Sales-as-a-Service.”

Source: RevenueBase Database · checked Sep 27, 2026
11Partial evidenceDallas, TX, United StatesHQ checked Sep 27, 20261-105 contacts →

Partial evidence

“At Logos Systems we are a security and vCISO services provider.”

Source: RevenueBase Database · checked Sep 27, 2026
12Indirect evidenceDallas, TX, United StatesHQ checked Sep 27, 202611-504 contacts →

Indirect evidence

“Birch Cline is a Dallas, Texas-based cybersecurity firm that specializes in protecting highly regulated environments and government agencies.”

Source: RevenueBase Database · checked Sep 27, 2026
13Strong evidenceDallas, TX, United StatesHQ checked Sep 27, 202651-2003 contacts →

Strong evidence

“c|g solutions is a premier boutique secure cloud services company, protecting critical data and brand reputations for companies with significant security, compliance, performance…”

Source: RevenueBase Database · checked Sep 27, 2026
14Indirect evidenceDallas, TX, United StatesHQ checked Sep 27, 20261-103 contacts →

Indirect evidence

“Method is here to assist its clients in protecting their vital information from the plethora of cyber-attacks occurring within all business segments.”

Source: RevenueBase Database · checked Sep 27, 2026
15Partial evidenceDallas, TX, United StatesHQ checked Sep 27, 20261-103 contacts →

Partial evidence

“Jemurai is a small security company built around developers that specialize in security.”

Source: RevenueBase Database · checked Sep 27, 2026
16Partial evidenceDallas, TX, United StatesHQ checked Sep 27, 20261-103 contacts →

Partial evidence

“With decades of combined experience in system and application architecture, Black Arc Security's team of veteran certified security experts can quickly evaluate and mitigate risks…”

Source: RevenueBase Database · checked Sep 27, 2026
17Partial evidenceDallas, TX, United StatesHQ checked Sep 27, 20261-103 contacts →

Partial evidence

“Bastet Partners is a small minority owned business specializing in developing and maintaining security solutions.”

Source: RevenueBase Database · checked Sep 27, 2026
18Partial evidenceDallas, TX, United StatesHQ checked Sep 27, 202611-502 contacts →

Partial evidence

“For nearly 20 years, Hawk Network Defense has helped organizations detect threats, reduce exposure, and respond to security incidents faster.”

Source: RevenueBase Database · checked Sep 27, 2026
19Partial evidenceDallas, TX, United StatesHQ checked Sep 27, 20261-102 contacts →

Partial evidence

“We specialize in delivering next-generation cybersecurity solutions, cloud networking services, virtualization expertise, and comprehensive system administration.”

Source: RevenueBase Database · checked Sep 27, 2026
20Indirect evidenceDallas, TX, United StatesHQ checked Sep 27, 20261-101 contacts →

Indirect evidence

“We offer an extensive range of consulting services tailored to meet the diverse needs of our customers.”

Source: RevenueBase Database · checked Sep 27, 2026

Showing 20 of 42 cloud infrastructure security services based in Dallas, United States

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Cloud infrastructure security services based in Dallas, United States at a glance

As of Sep 27, 2026
37.1%Verified-email coverage
17.3Average contacts per company
11-50Median size (employees)
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
16
11-50
13
51-200
9
201-500
3
1,001-5,000
1

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 42 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 cloud infrastructure security 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 Dallas, United States whose own description of what they do matches “cloud infrastructure security 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 cloud infrastructure security 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 cloud infrastructure security services, 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, 269 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 27, 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.

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 cloud infrastructure security 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 cloud infrastructure security services are there based in Dallas, United States?

RevenueBase identified 42 cloud infrastructure security services 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?

At&t Cybersecurity, headquartered in Dallas, tops this list with the largest team on record.

Which city in the United States has the most cloud infrastructure security services?

New York leads the United States with 93 headquartered companies, followed by San Francisco (62) and Austin (59). Dallas has 42.

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 269 verified decision-maker contacts tracked across these 42 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 27, 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.