Company lists · Data refreshed September 2026
Top 25 Information technology security companies based in Houston, United States
RevenueBase identified 102 information technology security companies headquartered in Houston, United States as of September 2026 and tracks 1,313 professional contacts across them, including 365 with verified work emails. New York is the largest hub.
This list covers information technology 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 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.
The 25 largest information technology security companies based in Houston, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 302 contacts → | ||||
Indirect evidence “AMSYS is a nationwide IT Services Provider headquartered in Houston, TX.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 167 contacts → | ||||
Strong evidence “ValueMentor is a global information security consulting & services company that delivers real results to global business in maximizing cybersecurity.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 58 contacts → | ||||
Partial evidence “Accredited and Veteran Owned and Operated •Cyber Security | MSSP Security Operations Center, CISO Advisory, Penetration Testing, Incident Response DFIR), and IT Security…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 53 contacts → | ||||
Partial evidence “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: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 24 contacts → | ||||
Indirect evidence “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: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 23 contacts → | ||||
Partial evidence “Born in 1998 during the dot-com bubble, neoRhino has evolved into a leading, innovative provider of business technology solutions.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 21 contacts → | ||||
Indirect evidence “Set Solutions is now a Trace3 Company.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 18 contacts → | ||||
Indirect evidence “Invoke integrates unified cybersecurity and innovative business solutions for mid-to-large enterprises.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 17 contacts → | ||||
Partial evidence “Cyber One Solutions is a Info Security and IT Managed Services and Consulting Company.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 14 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 14 contacts → | ||||
Indirect evidence “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: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 13 contacts → | ||||
Strong evidence “Santcore Technologies is a multidisciplinary IT consulting and solutions firm specializing in cybersecurity, GRC, cloud architecture, application security, digital transformation…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 11 contacts → | ||||
Indirect evidence “At Intelos, we drive meaningful change, revolutionizing business capabilities through high-quality IT services.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 8 contacts → | ||||
Indirect evidence “RevelSec, a Dataprise company, provides a full-suite of solutions and services.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 8 contacts → | ||||
Indirect evidence “H5 Strategic Alliances seeks to defend an organization’s infrastructure against cybersecurity threats and vulnerabilities.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 8 contacts → | ||||
Indirect evidence “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: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 7 contacts → | ||||
Partial evidence “Welcome to Nexus, where cutting-edge technology meets unparalleled expertise.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 7 contacts → | ||||
Indirect evidence “DAAKYI is a cybersecurity, digital trust, and infrastructure innovation company built to secure the modern digital economy.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 7 contacts → | ||||
Indirect evidence “At 713IT, we don’t just fix problems, we future-proof your business with trusted tech and bold digital strategy.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 6 contacts → | ||||
Partial evidence “Rapid Response in a Rapidly Changing World We are on a mission to be the premier provider of IT Security and IT Integration services.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 6 contacts → | ||||
Indirect evidence “We are a Cybersecurity firm that takes care of law firms.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 5 contacts → | ||||
Indirect evidence “AA Networks provides world class cybersecurity services and solutions, including Managed Detection and Response (MDR), cybersecurity compliance services, and Active Directory…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 5 contacts → | ||||
Indirect evidence “CyberAccord: Leading Managed Cybersecurity Services for Enterprises CyberAccord is a leading managed cybersecurity services provider that offers full-service solutions to…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 5 contacts → | ||||
Indirect evidence “Welcome to the DTarform!” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 4 contacts → | ||||
Indirect evidence “Nhà tư vấn và cung cấp các giải pháp công nghệ bảo mật an ninh mạng cho các tổ chức và doanh nghiệp” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: information technology security companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names information technology security companies.
- Partial evidence
- Its own public description names part of information technology security companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name information technology security companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 102 information technology security companies based in Houston, United States
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 365 reachable decision-makers.
Free signup · no credit card
Information technology security companies based in Houston, United States at a glance
As of Sep 21, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for Houston, 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 technology 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 Houston, United States whose own description of what they do matches “information technology 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 information technology 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 information technology 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 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, 365 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 21, 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 technology security companies by metro in the United States
- Information technology security companies in New York151
- Information technology security companies in Houston102
- Information technology security companies in Miami90
- Information technology security companies in Washington90
- Information technology security companies in Chicago89
- Information technology security companies in Atlanta86
- Information technology security companies in Austin83
- Information technology security companies in Dallas81
- Information technology security companies in Tampa74
- Information technology security companies in San Francisco65
- Information technology security companies in Los Angeles47
- Information technology security companies in Arlington45
- Information technology security companies in Charlotte45
- Information technology security companies in Orlando45
- Information technology security companies in San Diego45
- Information technology security companies in Denver42
- Information technology security companies in Las Vegas42
- Information technology security companies in Boston41
- Information technology security companies in San Antonio41
- Information technology security companies in Columbia39
- Information technology security companies in Phoenix35
- Information technology security companies in Alexandria34
- Information technology security companies in Baltimore31
- Information technology security companies in Seattle31
- Information technology security companies in Sheridan31
- Information technology security companies in Reston30
- Information technology security companies in Wilmington30
- Information technology security companies in Fairfax29
- Information technology security companies in Mclean27
- Information technology security companies in San Jose27
- Information technology security companies in Scottsdale27
- Information technology security companies in Irvine25
- Information technology security companies in Pittsburgh25
- Information technology security companies in Raleigh25
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 information technology 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 information technology security companies are there based in Houston, United States?
RevenueBase identified 102 information technology 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 technology security companies?
New York leads with 151 headquartered companies, followed by Houston (102) and Miami (90).
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 365 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 21, 2026.
Ready to reach these companies? Verified emails and direct dials for all 102 information technology security companies based in Houston, United States. Start with a free account, no credit card.
Download this list →Related lists
Information technology security companies by geography
- Information technology security companies based in Brisbane, Australia
- Information technology security companies based in Canberra, Australia
- Information technology security companies based in Melbourne, Australia
- Information technology security companies based in Sydney, Australia
- Information technology security companies based in Belo Horizonte, Brazil
- Information technology security companies based in Brasilia, Brazil
- Information technology security companies based in Curitiba, Brazil
- Information technology security companies based in Rio De Janeiro, Brazil
- Information technology security companies based in Sao Paulo, Brazil
- Information technology security companies based in Calgary, Canada
- Information technology security companies based in Mississauga, Canada
- Information technology security companies based in Montreal, Canada
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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Information technology security companies based in Brisbane, Australia
- Information technology security companies based in Canberra, Australia
- Information technology security companies based in Melbourne, Australia
- Information technology security companies based in Sydney, Australia
- Information technology security companies based in Belo Horizonte, Brazil
- Information technology security companies based in Brasilia, Brazil