Company lists · Data refreshed September 2026

Top 25 Managed security service providers based in Houston, United States

Name: Managed security service providers based in Houston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 120 companies tracked

RevenueBase identified 120 managed security service providers headquartered in Houston, United States as of September 2026 and tracks 2,680 professional contacts across them, including 1,228 with verified work emails. New York is the largest hub.

This list covers managed security service providers 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 5, 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.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review

120Companies

2,680Contacts tracked

1,228Verified emails

Unlock all 120 companies Free signup · no credit card · 500 free credits

The 25 largest managed security service providers based in Houston, United States

Ranked by team size

Top 25 of 120 managed security service providers based in Houston, United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names managed security service providers: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	MeriplexIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	501-1,000	450
	“If you’re a midsize enterprise with employees (i.e, an “MSE” according to Gartner), we know what you’re going through.” Source: company website · checked Sep 5, 2026
2	DyopathPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	501-1,000	392
	“DYOPATH, a leading Managed Service Provider (MSP) was founded to empower organizations by delivering trusted IT solutions that are grounded in accountability resulting in…” Source: company website · checked Sep 5, 2026
3	Amsys Innovative SolutionsIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	201-500	302
	“AMSYS is a nationwide IT Services Provider headquartered in Houston, TX.” Source: company website · checked Sep 5, 2026
4	Centre TechnologiesPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	201-500	286
	“Centre is a modern IT and cybersecurity partner delivering Managed IT, Business Intelligence, Cybersecurity, and Cloud services.” Source: company website · checked Sep 5, 2026
5	ValuementorPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	51-200	167
	“ValueMentor is a global information security consulting & services company that delivers real results to global business in maximizing cybersecurity.” Source: company website · checked Sep 5, 2026
6	Scis SecurityPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	58
	“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 5, 2026
7	QuantavenuesStrong evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	n/a	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 5, 2026
8	ArmexaIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	25
	“At Armexa, we protect what matters most.” Source: company website · checked Sep 5, 2026
9	Alliant CybersecurityIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	51-200	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 5, 2026
10	Neorhino IT SolutionsIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	23
	“Born in 1998 during the dot-com bubble, neoRhino has evolved into a leading, innovative provider of business technology solutions.” Source: company website · checked Sep 5, 2026
11	SET Solutions, A Trace3 CompanyIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	51-200	21
	“Set Solutions is now a Trace3 Company.” Source: company website · checked Sep 5, 2026
12	securitygate.ioPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	19
	“SecurityGate is a Houston-based cybersecurity software company.” Source: company website · checked Sep 5, 2026
13	InvokeIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	18
	“Invoke integrates unified cybersecurity and innovative business solutions for mid-to-large enterprises.” Source: company website · checked Sep 5, 2026
14	Cyber ONE SolutionsStrong evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	17
	“Cyber One Solutions is a Info Security and IT Managed Services and Consulting Company.” Source: company website · checked Sep 5, 2026
15	RED Trident INCIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	14
	Source: company website · checked Sep 5, 2026
16	Ikon TechPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	51-200	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 5, 2026
17	Santcore TechnologiesPartial evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	13
	“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 5, 2026
18	Itegriti CorporationIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	12
	“ITEGRITI /eye-teg-riti/ We Secure Critical Infrastructure.” Source: company website · checked Sep 5, 2026
19	Network BOX USAStrong evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	201-500	12
	“We are your 24x7x365 Managed Security Service Provider (MSSP).” Source: company website · checked Sep 5, 2026
20	IntelosIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	11
	“At Intelos, we drive meaningful change, revolutionizing business capabilities through high-quality IT services.” Source: company website · checked Sep 5, 2026
21	Revelsec, A Dataprise CompanyIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	8
	“RevelSec, a Dataprise company, provides a full-suite of solutions and services.” Source: company website · checked Sep 5, 2026
22	H5 Strategic AlliancesIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	1-10	8
	“H5 Strategic Alliances seeks to defend an organization’s infrastructure against cybersecurity threats and vulnerabilities.” Source: company website · checked Sep 5, 2026
23	Erascogroup, LLCPartial evidence	Houston, United StatesHQ checked Sep 5, 2026	1-10	8
	“ErascoGroup are highly experienced security experts from multiple industries and back grounds.” Source: company website · checked Sep 5, 2026
24	Triad InfosecIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	1-10	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 5, 2026
25	NEXUSIndirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	11-50	7
	“Welcome to Nexus, where cutting-edge technology meets unparalleled expertise.” Source: company website · checked Sep 5, 2026

Showing 25 of 120 managed security service providers based in Houston, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,228 reachable decision-makers.

Free signup · no credit card

See all 120 companies

Managed security service providers based in Houston, United States at a glance

As of Sep 5, 2026

1-10Median size (employees)

New YorkLargest hub · 200 HQs

Contacts with mobile numbers

Sep 5, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 120 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 managed security service providers, 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 “managed security service providers”. 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 managed security service providers, 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, 1,228 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 5, 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.

Managed security service providers by metro in the United States

Frequently asked

How many managed security service providers are there based in Houston, United States?

RevenueBase identified 120 managed security service providers 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 managed security service providers?

New York leads with 200 headquartered companies, followed by Houston (120) and Austin (117).

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 1,228 verified decision-maker contacts tracked across these 120 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 5, 2026.

Ready to reach these companies? Verified emails and direct dials for all 120 managed security service providers based in Houston, United States. Start with a free account, no credit card.

Get the full list

Related lists

Managed security service providers by geography

Browse the directory

Browse: Companies home · Managed security service providers in United States · All United States lists · All Managed security service providers lists · New lists

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.