Company lists · Data refreshed September 2026
Top 25 Information security companies based in Houston, United States
RevenueBase identified 102 information security companies headquartered in Houston, United States as of September 2026 and tracks 897 professional contacts across them, including 243 with verified work emails. New York is the largest hub.
This list covers information 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 information security companies based in Houston, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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. | |||||
| 2 | SymposiaIndirect evidence | 105 | |||
“An end-to-end intelligence platform that delivers Cybersecurity Trust Services & hands-on education to global industry leaders.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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. | |||||
| 4 | 53 | ||||
“Quantavenues is a premium cybersecurity consulting and managed security partner for mid-market and enterprise organizations, built for the threat landscape of 2026, not the…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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. | |||||
| 6 | 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. | |||||
| 7 | 14 | ||||
“Santcore Technologies is a multidisciplinary IT consulting and solutions firm specializing in cybersecurity, GRC, cloud architecture, application security, digital transformation…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 8 | 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. | |||||
| 9 | 14 | ||||
Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 10 | 11 | ||||
“At Intelos, we drive meaningful change, revolutionizing business capabilities through high-quality IT services.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 11 | 9 | ||||
“NGNSYS (Next Generation Network Systems) is an advanced technology consulting firm specializing in cybersecurity, managed services, data center designs (Arista and Cisco Nexus…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 12 | 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. | |||||
| 13 | Triad InfosecIndirect evidence | 8 | |||
“In a world where cyber threats never sleep, Triad InfoSec delivers battle-tested solutions built on decades of real-world defense and military precision.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 14 | 7 | ||||
“Encipher’s digital security solution, InfinityVAULT, will protect your company’s most vital digital information even when your network is breached.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 15 | 7 | ||||
“RevelSec, a Dataprise company, provides a full-suite of solutions and services.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 16 | 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. | |||||
| 17 | 7 | ||||
“Our mission is simple:"Be the Best of the Best".” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 18 | 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. | |||||
| 19 | Westerman AssociatesIndirect evidence | 5 | |||
“Westerman Associates is an IT support and consulting firm with more than 40 years of experience helping businesses simplify technology, reduce risk, and keep operations running…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 20 | 5 | ||||
“AA Networks provides world class cybersecurity services and solutions, including Managed Detection and Response (MDR), cybersecurity compliance services, and Active Directory…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 21 | 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. | |||||
| 22 | 5 | ||||
“Welcome to the DTarform!” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 23 | Tracy Consulting LLCIndirect evidence | 4 | |||
“At Tracy Consulting LLC, we strive to work with our clients to ensure that their unique needs are meet.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 24 | 4 | ||||
Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 25 | 4 | ||||
“Nhà tư vấn và cung cấp các giải pháp công nghệ bảo mật an ninh mạng cho các tổ chức và doanh nghiệp” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 102 information security companies based in Houston, United States
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Information 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 102 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 information 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 “information 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 information 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, 243 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.
Information security companies by metro in the United States
- Information security companies in New York172
- Information security companies in Houston102
- Information security companies in Atlanta98
- Information security companies in Miami98
- Information security companies in Washington95
- Information security companies in Austin93
- Information security companies in Chicago90
- Information security companies in Dallas88
- Information security companies in San Francisco82
- Information security companies in Tampa74
- Information security companies in San Diego59
- Information security companies in Los Angeles57
- Information security companies in Arlington53
- Information security companies in Charlotte51
- Information security companies in Boston49
- Information security companies in Denver49
- Information security companies in Orlando48
- Information security companies in Columbia47
- Information security companies in San Antonio41
- Information security companies in Las Vegas40
- Information security companies in Phoenix37
- Information security companies in Seattle36
- Information security companies in Reston34
- Information security companies in Alexandria33
- Information security companies in Scottsdale32
- Information security companies in Baltimore29
- Information security companies in Fairfax29
- Information security companies in Raleigh29
- Information security companies in Sheridan29
- Information security companies in Huntsville28
- Information security companies in Mclean28
- Information security companies in Pittsburgh28
- Information security companies in San Jose28
- Information security companies in Wilmington28
- Information security companies in Ashburn25
- Information security companies in Columbus25
- Information security companies in Minneapolis25
Frequently asked
How many information security companies are there based in Houston, United States?
RevenueBase identified 102 information 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?
Amsys Innovative Solutions, headquartered in Houston, tops this list with the largest team on record.
Which city has the most information security companies?
New York leads with 172 headquartered companies, followed by Houston (102) and Atlanta (98).
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 243 verified decision-maker contacts tracked across these 102 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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