Company lists · Data refreshed September 2026
Top 25 Security posture management companies based in Dallas, United States
RevenueBase identified 71 security posture management companies headquartered in Dallas, United States as of September 2026 and tracks 1,272 professional contacts across them, including 605 with verified work emails. New York is the largest hub.
This list covers security posture management 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, how directly it supports the match, and when it was last checked. Data refreshed September 6, 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.
The 25 largest security posture management companies based in Dallas, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 594 | ||||
Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | At&t CybersecurityPartial evidence | 156 | |||
“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: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | 70 | ||||
“Zyston is a next‑generation cybersecurity partner dedicated to helping organizations stay one step ahead of threats.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | 64 | ||||
“Apollo Information Systems delivers intelligence-led cybersecurity solutions for government agencies, educational institutions, and enterprises.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | SolcyberPartial evidence | 25 | |||
“SolCyber, a Forgepoint company, is the first modern MSSP to deliver a curated stack of enterprise strength security tools and services that are streamlined, accessible and…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | 15 | ||||
“At Upstart Cyber, we bring the expertise gained from government and large-scale businesses to organizations of all sizes.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | Progressive IT SolutionsIndirect evidence | 10 | |||
“We are like an “easy button” for your IT Department!” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | 9 | ||||
Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | 6 | ||||
“We are security engineers with over 20 years of experience working in the DFW Metroplex.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | 4 | ||||
“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: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | 4 | ||||
“Birch Cline is a Dallas, Texas-based cybersecurity firm that specializes in protecting highly regulated environments and government agencies.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 12 | TekzysPartial evidence | 4 | |||
“Since 2012, TEKZYS has protected business infrastructure through security-first governance and disciplined technology oversight.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 13 | 4 | ||||
“Welcome to Strafe, where cybersecurity steps up to combat emerging threats.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | 3 | ||||
“Method is here to assist its clients in protecting their vital information from the plethora of cyber-attacks occurring within all business segments.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | 3 | ||||
“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: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | 3 | ||||
“Bastet Partners is a small minority owned business specializing in developing and maintaining security solutions.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 17 | 3 | ||||
“Jemurai is a small security company built around developers that specialize in security.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 18 | 2 | ||||
“Dallas-based firm delivering strategic cybersecurity solutions that close critical security gaps and enable business growth.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 19 | Cyber Defense LabsPartial evidence | 2 | |||
“Cyber Defense Labs is a full life-cycle information security service provider helping companies manage, detect and respond to today’s cyber risks.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 20 | 2 | ||||
“For nearly 20 years, Hawk Network Defense has helped organizations detect threats, reduce exposure, and respond to security incidents faster.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 21 | 2 | ||||
“SLVA’s expertise has been hard won in the trenches of banks and financial services, healthcare, telecommunications, retail, utilities, and government organizations.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 22 | Praxis Data SecurityIndirect evidence | 2 | |||
“We are passionate about helping companies of any size thrive in today’s threat landscape.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 23 | Tier ONE Technology, LLCIndirect evidence | 1 | |||
Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 24 | MagnataurIndirect evidence | 1 | |||
“Magnataur is a premier Cybersecurity and cloud compliance consulting firm.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1 | ||||
“Cyberdors is a cybersecurity advisory and managed services firm helping organizations identify risks, build security strategies, and stay protected.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 71 security posture management companies based in Dallas, United States
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Security posture management companies based in Dallas, United States at a glance
As of Sep 6, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Dallas, over 71 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 security posture management companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 “security posture management companies”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among security posture management 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 an evidence 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, 605 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 6, 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.
Security posture management companies by metro in the United States
- Security posture management companies in New York118
- Security posture management companies in Atlanta79
- Security posture management companies in Austin79
- Security posture management companies in Houston72
- Security posture management companies in Dallas71
- Security posture management companies in San Francisco63
- Security posture management companies in Chicago59
- Security posture management companies in Miami59
- Security posture management companies in Washington58
- Security posture management companies in Los Angeles51
- Security posture management companies in Tampa50
- Security posture management companies in Charlotte41
- Security posture management companies in Arlington39
- Security posture management companies in Phoenix38
- Security posture management companies in San Diego37
- Security posture management companies in Las Vegas35
- Security posture management companies in Boston32
- Security posture management companies in Denver32
- Security posture management companies in Orlando32
- Security posture management companies in Columbia30
- Security posture management companies in Seattle30
- Security posture management companies in Baltimore26
- Security posture management companies in Wilmington26
Frequently asked
How many security posture management companies are there based in Dallas, United States?
RevenueBase identified 71 security posture management companies 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 security posture management companies?
New York leads with 118 headquartered companies, followed by Atlanta (79) and Austin (79).
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 605 verified decision-maker contacts tracked across these 71 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 6, 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.
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