Company lists · Data refreshed October 2026

Top 25 Cybersecurity companies based in Houston, United States

Name: Cybersecurity companies based in Houston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Oct 1, 2026 149 companies tracked

Our directory lists 149 cybersecurity companies based in Houston, United States, with 1,923 professional contacts and 733 email addresses. The list was last updated in October 2026. Across the United States, New York is the largest hub for this category (358 companies); Houston has 149.

Cybersecurity companies provide products and services that protect systems, networks, applications, devices, and data from unauthorized access, disruption, or misuse. This list covers companies that provide cybersecurity products, services, consulting, assessments, monitoring, incident response, or related protection for digital systems and data. Ranked by team size, largest first. Data current as of October 1, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Oct 1, 2026 86% judged on-target in blind review

149Companies

1,923Contacts tracked

733Verified emails

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The 25 largest cybersecurity companies based in Houston, United States

Ranked by team size

Top 25 of 149 cybersecurity companies based in Houston, United States, ranked by team size, largest first. Data refreshed Oct 1, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Amsys Innovative Solutions	Indirect evidence	Houston, TX, United StatesHQ checked Oct 1, 2026	201-500	302 contacts →
	Indirect evidence “AMSYS is a nationwide IT Services Provider headquartered in Houston, TX.” Source: RevenueBase Database · checked Oct 1, 2026
2	Centre Technologies	Strong evidence	Houston, TX, United StatesHQ checked Oct 1, 2026	201-500	286 contacts →
	Strong evidence “Centre is a modern IT and cybersecurity partner delivering Managed IT, Business Intelligence, Cybersecurity, and Cloud services.” Source: RevenueBase Database · checked Oct 1, 2026
3	Valuementor	Strong evidence	Houston, TX, United StatesHQ checked Oct 1, 2026	51-200	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 Oct 1, 2026
4	Aldridge	Strong evidence	Houston, TX, United StatesHQ checked Oct 1, 2026	51-200	132 contacts →
	Strong 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 Oct 1, 2026
5	Symposia	Strong evidence	Houston, TX, United StatesHQ checked Oct 1, 2026	11-50	104 contacts →
	Strong evidence “An end-to-end intelligence platform that delivers Cybersecurity Trust Services & hands-on education to global industry leaders.” Source: RevenueBase Database · checked Oct 1, 2026
6	Scis Security	Indirect evidence	Houston, TX, United StatesHQ checked Oct 1, 2026	11-50	58 contacts →
	Indirect 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 Oct 1, 2026
7	Guard 1 Services	Indirect evidence	Houston, TX, United StatesHQ checked Oct 1, 2026	51-200	54 contacts →
	Indirect evidence “Guard 1 Services provides integrated security solutions for the energy industry.” Source: RevenueBase Database · checked Oct 1, 2026
8	Quantavenues	Strong evidence	Houston, TX, United StatesHQ checked Oct 1, 2026	n/a	53 contacts →
	Strong 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 Oct 1, 2026
9	Armexa	Indirect evidence	Houston, TX, United StatesHQ checked Oct 1, 2026	11-50	25 contacts →
	Indirect evidence “At Armexa, we protect what matters most.” Source: RevenueBase Database · checked Oct 1, 2026
10	Alliant Cybersecurity	Strong evidence	Houston, TX, United StatesHQ checked Oct 1, 2026	51-200	24 contacts →
	Strong 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 Oct 1, 2026
11	SET Solutions, A Trace3 Company	Indirect evidence	Houston, TX, United StatesHQ checked Oct 1, 2026	51-200	21 contacts →
	Indirect evidence “Set Solutions is now a Trace3 Company.” Source: RevenueBase Database · checked Oct 1, 2026
12	Invisinet Technologies	Strong evidence	Houston, TX, United StatesHQ checked Oct 1, 2026	11-50	20 contacts →
	Strong evidence “Invisinet Technologies, a next-generation leader in Zero Trust Software Defined Perimeter (SDP) solutions, is a cybersecurity technology company specializing in innovations that…” Source: RevenueBase Database · checked Oct 1, 2026
13	securitygate.io	Strong evidence	Houston, TX, United StatesHQ checked Oct 1, 2026	11-50	19 contacts →
	Strong evidence “SecurityGate is a Houston-based cybersecurity software company.” Source: RevenueBase Database · checked Oct 1, 2026
14	Invoke	Strong evidence	Houston, TX, United StatesHQ checked Oct 1, 2026	11-50	18 contacts →
	Strong evidence “Invoke integrates unified cybersecurity and innovative business solutions for mid-to-large enterprises.” Source: RevenueBase Database · checked Oct 1, 2026
15	Cyber ONE Solutions	Indirect evidence	Houston, TX, United StatesHQ checked Oct 1, 2026	11-50	17 contacts →
	Indirect evidence “Cyber One Solutions is a Info Security and IT Managed Services and Consulting Company.” Source: RevenueBase Database · checked Oct 1, 2026
16	RED Trident INC	Indirect evidence	Houston, TX, United StatesHQ checked Oct 1, 2026	11-50	14 contacts →
	Indirect evidence Source: RevenueBase Database · checked Oct 1, 2026
17	Ikon Tech	Strong evidence	Houston, TX, United StatesHQ checked Oct 1, 2026	51-200	14 contacts →
	Strong 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 Oct 1, 2026
18	Santcore Technologies	Strong evidence	Houston, TX, United StatesHQ checked Oct 1, 2026	11-50	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 Oct 1, 2026
19	Itegriti Corporation	Indirect evidence	Houston, TX, United StatesHQ checked Oct 1, 2026	11-50	12 contacts →
	Indirect evidence “ITEGRITI /eye-teg-riti/ We Secure Critical Infrastructure.” Source: RevenueBase Database · checked Oct 1, 2026
20	Percento Technologies	Strong evidence	Houston, TX, United StatesHQ checked Oct 1, 2026	11-50	11 contacts →
	Strong evidence “Percento Technologies is an enterprise level managed technology solutions provider specializing in managed services, cybersecurity, and AI-driven business strategies.” Source: RevenueBase Database · checked Oct 1, 2026
21	Intelos	Indirect evidence	Houston, TX, United StatesHQ checked Oct 1, 2026	11-50	11 contacts →
	Indirect evidence “At Intelos, we drive meaningful change, revolutionizing business capabilities through high-quality IT services.” Source: RevenueBase Database · checked Oct 1, 2026
22	Revelsec, A Dataprise Company	Indirect evidence	Houston, TX, United StatesHQ checked Oct 1, 2026	11-50	8 contacts →
	Indirect evidence “RevelSec, a Dataprise company, provides a full-suite of solutions and services.” Source: RevenueBase Database · checked Oct 1, 2026
23	H5 Strategic Alliances	Strong evidence	Houston, TX, United StatesHQ checked Oct 1, 2026	1-10	8 contacts →
	Strong evidence “H5 Strategic Alliances seeks to defend an organization’s infrastructure against cybersecurity threats and vulnerabilities.” Source: RevenueBase Database · checked Oct 1, 2026
24	Merlin Solutions LLC	Strong evidence	Houston, TX, United StatesHQ checked Oct 1, 2026	11-50	8 contacts →
	Strong evidence “Merlin Solutions is an IT Services company, and our focus is Cybersecurity, AI Adoption, SAP, Managed Services and IT Staff augmentation.” Source: RevenueBase Database · checked Oct 1, 2026
25	Triad Infosec	Indirect evidence	Houston, TX, United StatesHQ checked Oct 1, 2026	1-10	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 Oct 1, 2026

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: cybersecurity 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 cybersecurity companies.
Partial evidence: Its own public description names part of cybersecurity companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity 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 149 cybersecurity companies based in Houston, United States

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Cybersecurity companies based in Houston, United States at a glance

As of Oct 1, 2026

38.1%Verified-email coverage

12.9Average contacts per company

11-50Median size (employees)

Oct 1, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 149 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 cybersecurity 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 “cybersecurity 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 cybersecurity 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 cybersecurity 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, 733 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 October 1, 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.

Cybersecurity companies by metro in the United States

Frequently asked

How many cybersecurity companies are in the directory?

The directory lists 149 cybersecurity companies based in Houston, United States.

Which city in the United States has the most cybersecurity companies?

New York leads the United States with 358 headquartered companies, followed by San Francisco (190) and Austin (187). Houston has 149.

How many contacts are available for cybersecurity companies?

The directory includes 1,923 professional contacts and 733 email addresses for the listed cybersecurity companies.

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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.