Company lists · Data refreshed September 2026
Top 25 Ics security companies based in Houston, United States
RevenueBase identified 58 ics security companies headquartered in Houston, United States as of September 2026 and tracks 2,668 professional contacts across them, including 730 with verified work emails. Houston is the largest hub.
This list covers ics security companies headquartered in Houston, 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 3, 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 ics security companies based in Houston, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,227 | ||||
“PAS, part of Hexagon's Asset Lifecycle Intelligence division, delivers software solutions that prevent, detect, & remediate cyber threats, reduce process safety risks, and…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 2 | 311 | ||||
“AMSYS is a nationwide IT Services Provider headquartered in Houston, TX.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 3 | 101 | ||||
“EverLine provides fully-integrated compliance, SCADA/IT, control room and security services to more than 200 customers nationwide through a unique Technical Stack.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 4 | 59 | ||||
“Accredited and Veteran Owned and Operated •Cyber Security | MSSP Security Operations Center, CISO Advisory, Penetration Testing, Incident Response DFIR), and IT Security…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 5 | 53 | ||||
“Guard 1 Services provides integrated security solutions for the energy industry.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 6 | 43 | ||||
“The premier security company of Texas where customers come first.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 7 | 26 | ||||
“At Armexa, we protect what matters most.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 8 | 24 | ||||
“Several years ago as cyber threats were becoming more and more advanced, we decided to search for a cybersecurity partner to help protect our client’s sensitive data and our…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 9 | 21 | ||||
“Set Solutions delivers advanced Cybersecurity consulting, solution integration and procurement solutions tailored to Commercial, Enterprise, Government and Educational customers.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 10 | 19 | ||||
“OMNI Fire and Security was started in 1987 to provide a locally owned option to the "big box" national firms.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 11 | 18 | ||||
“SecurityGate is a Houston-based cybersecurity software company.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 12 | 14 | ||||
“Ikon Tech is a highly regarded cybersecurity and IT infrastructure management company that provides comprehensive solutions to businesses of all sizes as they strive for digital…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 13 | 14 | ||||
Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 14 | 9 | ||||
“Anuva Labs, Your AI Transformation Partner At Anuva Labs, we believe every organization deserves a clear, confident path into the AI era.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 15 | 7 | ||||
“H5 Strategic Alliances seeks to defend an organization’s infrastructure against cybersecurity threats and vulnerabilities.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 16 | 6 | ||||
“Our Mission: Be the vanguard of safeguarding essential industries against the ever-evolving landscape of physical and cyber threats.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 17 | 5 | ||||
“CyberAccord: Leading Managed Cybersecurity Services for Enterprises CyberAccord is a leading managed cybersecurity services provider that offers full-service solutions to…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 18 | 4 | ||||
“AVCOMM Technologies is a full-service Industrial IT solutions provider.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 19 | 3 | ||||
“We specialize in delivering top-notch cybersecurity and IT solutions, including 100% remote work services, XDR (Extended Detection and Response), advanced penetration testing, and…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 20 | 3 | ||||
“The Secure-Tactics team is a tight-knit group of multidisciplinary information security specialists.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 21 | 3 | ||||
“Welcome to Corvit Networks LLC, where our passion for cybersecurity has been central to our purpose.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 22 | 2 | ||||
“RD SEC is a cybersecurity solutions and services provider dedicated to helping organizations stay protected through a consultative, expertise-driven approach.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 23 | 2 | ||||
“Intellibind Technologies LLC provides cyber security consulting services, management tools and training to protect our nation’s critical infrastructure.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 24 | Cyber Forge Security, INCPartial evidence | 1 | |||
“Privately owned firm providing cyber security consulting services to businesses.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1 | ||||
“It takes a lifetime to build reputation, but only a few minutes of cyber-incident to ruin it.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 58 ics security companies based in Houston, United States
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Ics security companies based in Houston, United States at a glance
As of Sep 3, 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 Houston, over 58 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 ics security 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 Houston, United States whose own description of what they do matches “ics security 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 ics security companies, and records with no verified work email. Companies headquartered outside Houston 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, 730 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 3, 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.
Ics security companies by metro in the United States
Frequently asked
How many ics security companies are there based in Houston, United States?
RevenueBase identified 58 ics security companies headquartered in Houston, 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?
PAS, headquartered in Houston, tops this list with the largest team on record.
Which city has the most ics security companies?
Houston leads with 58 headquartered companies, followed by New York (55) and Miami (39).
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 730 verified decision-maker contacts tracked across these 58 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 3, 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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