Company lists · Data refreshed August 2026

Top 14 Api security companies based in Dallas, United States

RevenueBase identified 28 api security companies headquartered in Dallas, United States as of August 2026 and tracks 492 professional contacts across them, including 171 with verified work emails and 223 with mobile numbers. New York is the largest hub.

This list covers api security companies 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 August 31, 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 RevenueBase Smart Search rating on every row Refreshed Aug 31, 2026 86% judged on-target in blind review
28Companies
492Contacts tracked
171Verified emails
223Mobile numbers
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The 14 largest api security companies based in Dallas, United States

Ranked by team size
Top 14 of 28 api security companies based in Dallas, United States, ranked by team size, largest first. Data refreshed Aug 31, 2026. RevenueBase Smart Search rates how each company's information relates to api security companies: 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 States1,001-5,000158 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 Aug 31, 2026
2Indirect evidenceDallas, TX, United States51-20069 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Aug 31, 2026
3Indirect evidenceDallas, TX, United States51-20063 contacts →

Indirect evidence

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

Source: RevenueBase Database · checked Aug 31, 2026
4Partial evidenceDallas, TX, United States201-50032 contacts →

Partial evidence

“With a vision to become one of the foremost leaders, partner and trailblazer in the cyber security industry, Miller Jones Inc, features a rich portfolio of information security…”

Source: RevenueBase Database · checked Aug 31, 2026
5Partial evidenceDallas, TX, United States51-20028 contacts →

Partial evidence

“At BlackLake Security, we cut through cybersecurity complexity with clarity, expertise, and transparency.”

Source: RevenueBase Database · checked Aug 31, 2026
6Indirect evidenceDallas, TX, United States11-5016 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 Aug 31, 2026
7Indirect evidenceDallas, TX, United States11-505 contacts →

Indirect evidence

“Most organizations believe they're protected.”

Source: RevenueBase Database · checked Aug 31, 2026
8Indirect evidenceDallas, TX, United States11-504 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 Aug 31, 2026
9Indirect evidenceDallas, TX, United States1-104 contacts →

Indirect evidence

“Welcome to Strafe, where cybersecurity steps up to combat emerging threats.”

Source: RevenueBase Database · checked Aug 31, 2026
10Indirect evidenceDallas, TX, United States1-103 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 Aug 31, 2026
11Partial evidenceDallas, TX, United States1-103 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Aug 31, 2026
12Partial evidenceDallas, TX, United States1-103 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 Aug 31, 2026
13Partial evidenceDallas, TX, United States1-102 contacts →

Partial evidence

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

Source: RevenueBase Database · checked Aug 31, 2026
14Indirect evidenceDallas, TX, United States1-102 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 Aug 31, 2026

Showing 14 of 28 api security companies based in Dallas, United States

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Api security companies based in Dallas, United States at a glance

As of Aug 31, 2026
34.8%Verified-email coverage
45.3%Mobile-number coverage
17.6Average contacts per company
11-50Median size (employees)
142.9%Largest-city concentration · New York
Aug 31, 2026Page data refreshed

Companies by employee count

1-10
12
11-50
10
51-200
4
201-500
1
1,001-5,000
1

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 api security companies, 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 “api security companies”. 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 api security companies), 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 api security companies, 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, 171 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 August 31, 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 api security companies, 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 api security companies are there based in Dallas, United States?

RevenueBase identified 28 api security companies headquartered in Dallas, United States as of August 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 api security companies?

New York leads with 40 headquartered companies, followed by San Francisco (32) and Austin (31).

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 171 verified decision-maker contacts tracked across these 28 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on August 31, 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.