Company lists · Data refreshed September 2026

Top 10 Cybersecurity incident response based in Dallas, United States

RevenueBase identified 30 cybersecurity incident response headquartered in Dallas, United States as of September 2026 and tracks 486 professional contacts across them, including 160 with verified work emails and 216 with mobile numbers. New York is the largest hub.

This list covers cybersecurity incident response 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
30Companies
486Contacts tracked
160Verified emails
216Mobile numbers
Explore this list → Free signup · no credit card · 500 free credits

The 10 largest cybersecurity incident response based in Dallas, United States

Ranked by team size
Top 10 of 30 cybersecurity incident response 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 incident response: 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 10, 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 10, 2026
2Partial evidenceDallas, TX, United StatesHQ checked Sep 10, 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 10, 2026
3Partial evidenceDallas, TX, United StatesHQ checked Sep 10, 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 10, 2026
4Partial evidenceDallas, TX, United StatesHQ checked Sep 10, 202611-504 contacts →

Partial 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 10, 2026
5Indirect evidenceDallas, TX, United StatesHQ checked Sep 10, 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 10, 2026
6Partial evidenceDallas, TX, United StatesHQ checked Sep 10, 20261-102 contacts →

Partial evidence

“Dallas-based firm delivering strategic cybersecurity solutions that close critical security gaps and enable business growth.”

Source: RevenueBase Database · checked Sep 10, 2026
7Partial evidenceDallas, TX, United StatesHQ checked Sep 10, 202651-2002 contacts →

Partial evidence

“Cyber Defense Labs is a full life-cycle information security service provider helping companies manage, detect and respond to today’s cyber risks.”

Source: RevenueBase Database · checked Sep 10, 2026
8Strong evidenceDallas, TX, United StatesHQ checked Sep 10, 202611-502 contacts →

Strong 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 10, 2026
9Indirect evidenceDallas, TX, United StatesHQ checked Sep 10, 20261-102 contacts →

Indirect evidence

“SLVA’s expertise has been hard won in the trenches of banks and financial services, healthcare, telecommunications, retail, utilities, and government organizations.”

Source: RevenueBase Database · checked Sep 10, 2026
10Partial evidenceDallas, TX, United StatesHQ checked Sep 10, 20261-101 contacts →

Partial evidence

“Cyberdors is a cybersecurity advisory and managed services firm helping organizations identify risks, build security strategies, and stay protected.”

Source: RevenueBase Database · checked Sep 10, 2026

Showing 10 of 30 cybersecurity incident response based in Dallas, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 160 reachable decision-makers.

Free signup · no credit card

View the full list →

Cybersecurity incident response based in Dallas, United States at a glance

As of Sep 10, 2026
32.9%Verified-email coverage
44.4%Mobile-number coverage
16.2Average contacts per company
11-50Median size (employees)
180.0%Largest-city concentration · New York
Sep 10, 2026Page data refreshed

Companies by employee count

1-10
12
11-50
12
51-200
5
1,001-5,000
1

Freshness & accuracy

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

Email last verified

Median 12.0d

Company record updated

Median 57.0d

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 incident response, 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 incident response”. 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 incident response), 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 incident response, 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, 160 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 incident response 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 incident response, 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 incident response are there based in Dallas, United States?

RevenueBase identified 30 cybersecurity incident response 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 has the most cybersecurity incident response?

New York leads with 54 headquartered companies, followed by Houston (34) and Washington (33).

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 160 verified decision-maker contacts tracked across these 30 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 30 cybersecurity incident response based in Dallas, United States. Start with a free account, no credit card.

Download this list →

Related lists

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.