Company lists · Data refreshed September 2026
Top 25 Network security professional services based in Houston, United States
RevenueBase identified 112 network security professional services headquartered in Houston, United States as of September 2026 and tracks 1,936 professional contacts across them, including 808 with verified work emails. New York is the largest hub.
This list covers network security professional services 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 network security professional services based in Houston, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 450 contacts → | ||||
Indirect evidence “If you’re a midsize enterprise with employees (i.e, an “MSE” according to Gartner), we know what you’re going through.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 286 contacts → | ||||
Indirect evidence “Centre is a modern IT and cybersecurity partner delivering Managed IT, Business Intelligence, Cybersecurity, and Cloud services.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 167 contacts → | ||||
Partial 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. | |||||
| 4 | 132 contacts → | ||||
Indirect evidence “Aldridge is an IT outsourcing, consulting, and cybersecurity company that specializes in providing best-fit technology solutions to midsize organizations and small organizations…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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. | |||||
| 6 | 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. | |||||
| 7 | 25 contacts → | ||||
Partial evidence “For more than 20 years, we’ve helped businesses grow stronger through secure networks, smarter collaboration, reliable cloud solutions, and proactive IT management.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 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. | |||||
| 9 | 24 contacts → | ||||
Indirect evidence “Leading the South Texas region since 1994, CST Corp is one of only 50 Tier Two Cisco Gold partners in the United Sates.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 21 contacts → | ||||
Indirect evidence “Set Solutions is now a Trace3 Company.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 17 contacts → | ||||
Indirect evidence “ThinOps provides technology consulting services around architecture, implementation, migrations, maintenance, or managed services for enterprise deployments particularly…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 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. | |||||
| 13 | 14 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 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. | |||||
| 15 | 13 contacts → | ||||
Partial 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. | |||||
| 16 | 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. | |||||
| 17 | 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. | |||||
| 18 | 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. | |||||
| 19 | 8 contacts → | ||||
Partial evidence “ErascoGroup are highly experienced security experts from multiple industries and back grounds.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 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. | |||||
| 21 | 7 contacts → | ||||
Indirect evidence “Welcome to Nexus, where cutting-edge technology meets unparalleled expertise.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 7 contacts → | ||||
Indirect evidence “Our mission is simple:"Be the Best of the Best".” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 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. | |||||
| 24 | 6 contacts → | ||||
Partial evidence “Fireteam Network’s consultants have over 20 years of enterprise level experience and have acquired top level industry certifications.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 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. | |||||
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: network security professional services. 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 network security professional services.
- Partial evidence
- Its own public description names part of network security professional services, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name network security professional services. 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 112 network security professional services based in Houston, United States
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Network security professional services 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 112 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 network security professional services, 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 “network security professional services”. 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 network security professional services), 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 network security professional services, 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, 808 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.
Network security professional services by metro in the United States
- Network security professional services in New York187
- Network security professional services in Houston112
- Network security professional services in Atlanta107
- Network security professional services in Austin100
- Network security professional services in Chicago95
- Network security professional services in Dallas95
- Network security professional services in Washington95
- Network security professional services in Miami93
- Network security professional services in Tampa77
- Network security professional services in San Francisco68
- Network security professional services in Los Angeles62
- Network security professional services in San Diego59
- Network security professional services in Charlotte56
- Network security professional services in Denver52
- Network security professional services in Las Vegas51
- Network security professional services in Arlington50
- Network security professional services in Boston48
- Network security professional services in Phoenix47
- Network security professional services in Orlando46
- Network security professional services in San Antonio46
- Network security professional services in Columbia45
- Network security professional services in Seattle40
- Network security professional services in Alexandria39
- Network security professional services in Raleigh38
- Network security professional services in Reston38
- Network security professional services in Wilmington35
- Network security professional services in Irvine34
- Network security professional services in Baltimore33
- Network security professional services in Mclean33
- Network security professional services in San Jose33
- Network security professional services in Columbus31
- Network security professional services in Portland30
- Network security professional services in Ashburn29
- Network security professional services in Fairfax29
- Network security professional services in Sheridan29
- Network security professional services in Fort Lauderdale27
- Network security professional services in Indianapolis27
- Network security professional services in Plano27
- Network security professional services in Colorado Springs26
- Network security professional services in Huntsville26
- Network security professional services in Pittsburgh26
- Network security professional services in Scottsdale26
- Network security professional services in Richmond25
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 network security professional services, 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 network security professional services are there based in Houston, United States?
RevenueBase identified 112 network security professional services 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?
Meriplex, headquartered in Houston, tops this list with the largest team on record.
Which city has the most network security professional services?
New York leads with 187 headquartered companies, followed by Houston (112) and Atlanta (107).
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 808 verified decision-maker contacts tracked across these 112 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.
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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 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.
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