Company lists · Data refreshed September 2026

Top 24 Cybersecurity advisory services based in Dallas, United States

RevenueBase identified 148 cybersecurity advisory services headquartered in Dallas, United States as of September 2026 and tracks 1,715 professional contacts across them, including 732 with verified work emails. New York is the largest hub.

This list covers cybersecurity advisory 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 21, 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 21, 2026 86% judged on-target in blind review
148Companies
1,715Contacts tracked
732Verified emails
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The 24 largest cybersecurity advisory services based in Dallas, United States

Ranked by team size
Top 24 of 148 cybersecurity advisory services based in Dallas, United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity advisory 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
1Indirect evidenceDallas, TX, United StatesHQ checked Sep 21, 20261,001-5,000594 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 21, 2026
2Partial evidenceDallas, TX, United StatesHQ checked Sep 21, 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 21, 2026
3Indirect evidenceDallas, TX, United StatesHQ checked Sep 21, 202651-20082 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
4Partial evidenceDallas, TX, United StatesHQ checked Sep 21, 202651-20070 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
5Partial evidenceDallas, TX, United StatesHQ checked Sep 21, 202651-20064 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
6Strong evidenceDallas, TX, United StatesHQ checked Sep 21, 202651-20052 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 21, 2026
7Indirect evidenceDallas, TX, United StatesHQ checked Sep 21, 202611-5026 contacts →

Indirect evidence

“Founded in 2017, Vizipp Inc.”

Source: RevenueBase Database · checked Sep 21, 2026
8Indirect evidenceDallas, TX, United StatesHQ checked Sep 21, 202651-20024 contacts →

Indirect evidence

“Voluble Systems LLC.(VOLUBLE) professional services company that provides strategy, custom information technology, information security, consulting, digital, technology…”

Source: RevenueBase Database · checked Sep 21, 2026
9Indirect evidenceDallas, TX, United StatesHQ checked Sep 21, 202611-5018 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
10Indirect evidenceDallas, TX, United StatesHQ checked Sep 21, 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 21, 2026
11Indirect evidenceDallas, TX, United StatesHQ checked Sep 21, 202611-5012 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 21, 2026
12Indirect evidenceDallas, TX, United StatesHQ checked Sep 21, 20261-1010 contacts →

Indirect evidence

“We are like an “easy button” for your IT Department!”

Source: RevenueBase Database · checked Sep 21, 2026
13Indirect evidenceDallas, TX, United StatesHQ checked Sep 21, 20261-109 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 21, 2026
14Indirect evidenceDallas, TX, United StatesHQ checked Sep 21, 202611-509 contacts →

Indirect evidence

“Technoxi isn't your average IT company, and we never wanted to be.”

Source: RevenueBase Database · checked Sep 21, 2026
15Indirect evidenceDallas, TX, United StatesHQ checked Sep 21, 202611-508 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 21, 2026
16Indirect evidenceDallas, TX, United StatesHQ checked Sep 21, 202611-507 contacts →

Indirect evidence

“Did you know that the IT Industry is completely unregulated?”

Source: RevenueBase Database · checked Sep 21, 2026
17Indirect evidenceDallas, TX, United StatesHQ checked Sep 21, 20261-106 contacts →

Indirect evidence

“We are security engineers with over 20 years of experience working in the DFW Metroplex.”

Source: RevenueBase Database · checked Sep 21, 2026
18Indirect evidenceDallas, TX, United StatesHQ checked Sep 21, 20261-106 contacts →

Indirect evidence

“Technology & Analytics' mission is to offer the best support, knowledge, and technical ability to give your company uninterrupted service, unmatched by any other software…”

Source: RevenueBase Database · checked Sep 21, 2026
19Indirect evidenceDallas, TX, United StatesHQ checked Sep 21, 202651-2006 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
20Indirect evidenceDallas, TX, United StatesHQ checked Sep 21, 20261-106 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 21, 2026
21Partial evidenceDallas, United StatesHQ checked Sep 21, 202611-505 contacts →

Partial evidence

“Backed by a network of top VCs, advisory leaders, and elite cyber talent, we accelerate growth through deep market insight and hands-on support.”

Source: RevenueBase Database · checked Sep 21, 2026
22Indirect evidenceDallas, TX, United StatesHQ checked Sep 21, 20261-105 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Sep 21, 2026
23Indirect evidenceDallas, TX, United StatesHQ checked Sep 21, 202611-505 contacts →

Indirect evidence

“DataEcon established its reputation as a trusted and committed partner by delivering mission-critical and business-driven solutions that provide the scalability and support…”

Source: RevenueBase Database · checked Sep 21, 2026
24Indirect evidenceDallas, TX, United StatesHQ checked Sep 21, 20261-104 contacts →

Indirect evidence

“ASI Security Partners, a leading network and internet security company, delivers a comprehensive set of best-of-breed solutions that help customers protect their critical…”

Source: RevenueBase Database · checked Sep 21, 2026

Showing 24 of 148 cybersecurity advisory services based in Dallas, United States

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Cybersecurity advisory services based in Dallas, United States at a glance

As of Sep 21, 2026
42.7%Verified-email coverage
11.6Average contacts per company
1-10Median size (employees)
207.4%Largest-city concentration · New York
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
78
11-50
46
51-200
16
201-500
4
501-1,000
1
1,001-5,000
2

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 148 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 cybersecurity advisory 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 “cybersecurity advisory 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 cybersecurity advisory 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 cybersecurity advisory 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, 732 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 21, 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 advisory 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 cybersecurity advisory 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 cybersecurity advisory services are there based in Dallas, United States?

RevenueBase identified 148 cybersecurity advisory 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?

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

Which city has the most cybersecurity advisory services?

New York leads with 307 headquartered companies, followed by Washington (191) and Houston (181).

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 732 verified decision-maker contacts tracked across these 148 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 21, 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.