Company lists · Data refreshed September 2026
Top 25 Managed security services companies based in Austin, United States
RevenueBase identified 65 managed security services companies headquartered in Austin, United States as of September 2026 and tracks 3,265 professional contacts across them, including 1,825 with verified work emails. New York is the largest hub.
This list covers managed security services companies headquartered in Austin, 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 5, 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 managed security services companies based in Austin, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,252 | ||||
“Thales is a global leader in cybersecurity, helping the most trusted organizations in the world protect their most critical applications, data, and identities anywhere at scale.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | 1,217 | ||||
“On Dec.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | 167 | ||||
“11:11 Systems is a managed infrastructure solutions provider that empowers customers to modernize, protect, and manage mission-critical applications and data, leveraging 11:11’s…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 137 | ||||
“Solis is a leading provider of managed cyber security services and cyber incident response.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | 79 | ||||
“ACT Security Group is based in Texas and provides security personnel and patrol services to a wide range of industries which include commercial, retail, residential and government…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | RSIIndirect evidence | 21 | |||
“Mission-critical cybersecurity and IT solutions for businesses.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 19 | ||||
“Recon offers the best Managed Security Operations on the planet.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | Univista LLCIndirect evidence | 15 | |||
“Who we are.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | 14 | ||||
“ALCON DTS is a leader in the Managed IT Services and Cyber Security industry with headquarters located in Austin, TX.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | 13 | ||||
“Welcome to Allied IT Systems!” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | ReallinxPartial evidence | 13 | |||
“Reallinx was founded in 2002 and has grown into a best-in-class nationwide provider of managed services.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | ProtisPartial evidence | 11 | |||
“Security.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | Parafox TechnologiesPartial evidence | 10 | |||
“Securing Your Data, Empowering Your Business Parafox Technologies is a leading provider of comprehensive data security solutions designed to safeguard organization's most valuable…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | 10 | ||||
“At InQuest, we specialize in providing comprehensive network-based security solutions that empower organizations to protect their most critical assets: their people.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | 6 | ||||
“CyberForce Security is a cybersecurity-focused Value Added Distributor (VAD) helping MSPs, MSSPs, VARs, and IT solution providers build profitable, enterprise-grade security…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | 6 | ||||
“At DataHEALTH®, we are dedicated to empowering small to mid-sized businesses (SMBs) with enterprise-level solutions tailored to their needs.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | Luna TechIndirect evidence | 6 | |||
“Luna Tech: Redefining IT with Value and Transparency At Luna Tech, we’re transforming IT services through simplicity, transparency, and unmatched value.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | 5 | ||||
“Gardient provides managed services, systems integration and consulting.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | 5 | ||||
“At Intelliguards, we are on the frontline of cybersecurity, offering intelligence-led solutions tailored to the unique challenges of modern digital landscapes.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | 4 | ||||
“HOPZERO uses a patented, next-gen network security solution to protect enterprise data.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | Tech Support AustinIndirect evidence | 4 | |||
“At Tech Support Austin, our goal is to empower your business with technology that drives success.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | Canitan LLCIndirect evidence | 3 | |||
Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | 3 | ||||
“dayONE Cyber is a Managed Security Service Provider (MSSP) which provides our customers with the best service in the industry, coupled with the most advanced, holistic…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | 3 | ||||
“Data Defense Partners is your strategic ally in securing today’s digital enterprise.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 25 | Confidence InnovationIndirect evidence | 2 | |||
“Confidence Innovation is a product consulting and technology development firm.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 65 managed security services companies based in Austin, United States
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Managed security services companies based in Austin, United States at a glance
As of Sep 5, 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 Austin, over 65 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 managed security services 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 Austin, United States whose own description of what they do matches “managed security services 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 managed security services companies, and records with no verified work email. Companies headquartered outside Austin 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, 1,825 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 5, 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.
Managed security services companies by metro in the United States
- Managed security services companies in New York103
- Managed security services companies in Houston85
- Managed security services companies in Miami81
- Managed security services companies in Austin65
- Managed security services companies in Chicago64
- Managed security services companies in Dallas63
- Managed security services companies in Atlanta60
- Managed security services companies in Los Angeles57
- Managed security services companies in Tampa47
- Managed security services companies in San Francisco43
- Managed security services companies in Washington43
- Managed security services companies in Charlotte39
- Managed security services companies in Las Vegas38
- Managed security services companies in San Diego37
- Managed security services companies in Denver35
- Managed security services companies in Phoenix34
- Managed security services companies in Irvine30
- Managed security services companies in Arlington26
- Managed security services companies in Columbia26
- Managed security services companies in Orlando26
- Managed security services companies in Scottsdale25
- Managed security services companies in Wilmington25
Frequently asked
How many managed security services companies are there based in Austin, United States?
RevenueBase identified 65 managed security services companies headquartered in Austin, 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?
Thales Cybersecurity Products, headquartered in Austin, tops this list with the largest team on record.
Which city has the most managed security services companies?
New York leads with 103 headquartered companies, followed by Houston (85) and Miami (81).
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 1,825 verified decision-maker contacts tracked across these 65 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 5, 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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