Company lists · Data refreshed September 2026

Top 25 Intelligence and security services based in Houston, United States

Name: Intelligence and security services based in Houston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 95 companies tracked

RevenueBase identified 95 intelligence and security services headquartered in Houston, United States as of September 2026 and tracks 568 professional contacts across them, including 128 with verified work emails. Washington is the largest hub.

This list covers intelligence and security 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, how directly it supports the match, and when it was last checked. Data refreshed September 4, 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 4, 2026 86% judged on-target in blind review

95Companies

568Contacts tracked

128Verified emails

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The 25 largest intelligence and security services based in Houston, United States

Ranked by team size

Top 25 of 95 intelligence and security services based in Houston, United States, ranked by team size, largest first. Data refreshed Sep 4, 2026. Evidence rates how directly each company's own description names intelligence and security services: 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	SymposiaPartial evidence	Houston, TX, United StatesHQ checked Sep 4, 2026	11-50	105
	“An end-to-end intelligence platform that delivers Cybersecurity Trust Services & hands-on education to global industry leaders.” Source: company website · checked Sep 4, 2026
2	Scis SecurityPartial evidence	Houston, TX, United StatesHQ checked Sep 4, 2026	11-50	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 4, 2026
3	QuantavenuesPartial evidence	Houston, TX, United StatesHQ checked Sep 4, 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 4, 2026
4	ArmexaIndirect evidence	Houston, TX, United StatesHQ checked Sep 4, 2026	11-50	26
	“At Armexa, we protect what matters most.” Source: company website · checked Sep 4, 2026
5	Alliant CybersecurityIndirect evidence	Houston, TX, United StatesHQ checked Sep 4, 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 4, 2026
6	SET Solutions, A Trace3 CompanyIndirect evidence	Houston, TX, United StatesHQ checked Sep 4, 2026	51-200	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 4, 2026
7	Santcore TechnologiesPartial evidence	Houston, TX, United StatesHQ checked Sep 4, 2026	11-50	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 4, 2026
8	RED Trident INCIndirect evidence	Houston, TX, United StatesHQ checked Sep 4, 2026	11-50	14
	Source: company website · checked Sep 4, 2026
9	Banyan Risk GroupIndirect evidence	Houston, TX, United StatesHQ checked Sep 4, 2026	11-50	11
	Source: company website · checked Sep 4, 2026
10	Ngnsys, LLCIndirect evidence	Houston, TX, United StatesHQ checked Sep 4, 2026	11-50	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 4, 2026
11	Triad InfosecIndirect evidence	Houston, TX, United StatesHQ checked Sep 4, 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 4, 2026
12	H5 Strategic AlliancesIndirect evidence	Houston, TX, United StatesHQ checked Sep 4, 2026	1-10	7
	“H5 Strategic Alliances seeks to defend an organization’s infrastructure against cybersecurity threats and vulnerabilities.” Source: company website · checked Sep 4, 2026
13	Faststring Professional ServicesPartial evidence	Houston, TX, United StatesHQ checked Sep 4, 2026	1-10	7
	“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: company website · checked Sep 4, 2026
14	Erascogroup, LLCPartial evidence	Houston, United StatesHQ checked Sep 4, 2026	1-10	7
	“ErascoGroup are highly experienced security experts from multiple industries and back grounds.” Source: company website · checked Sep 4, 2026
15	NEXUSIndirect evidence	Houston, TX, United StatesHQ checked Sep 4, 2026	11-50	6
	“Welcome to Nexus, where cutting-edge technology meets unparalleled expertise.” Source: company website · checked Sep 4, 2026
16	Applied Security ConvergenceIndirect evidence	Houston, TX, United StatesHQ checked Sep 4, 2026	1-10	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 4, 2026
17	Southcross Security, INCIndirect evidence	Houston, TX, United StatesHQ checked Sep 4, 2026	11-50	5
	Source: company website · checked Sep 4, 2026
18	Tracy Consulting LLCIndirect evidence	Houston, TX, United StatesHQ checked Sep 4, 2026	1-10	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 4, 2026
19	Cocha Technology INCIndirect evidence	Houston, TX, United StatesHQ checked Sep 4, 2026	1-10	4
	Source: company website · checked Sep 4, 2026
20	John&partners, Llc. CybersecurityIndirect evidence	Houston, TX, United StatesHQ checked Sep 4, 2026	11-50	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 4, 2026
21	The Guidry GroupStrong evidence	Houston, TX, United StatesHQ checked Sep 4, 2026	11-50	3
	“For almost three decades, The Guidry Group has been assisting clients to respond swiftly, intelligently, and effectively to the complete spectrum of security concerns.” Source: company website · checked Sep 4, 2026
22	Cybersecurity IT Consulting LLCIndirect evidence	Houston, TX, United StatesHQ checked Sep 4, 2026	1-10	3
	“We specialize in delivering top-notch cybersecurity and IT solutions, including 100% remote work services, XDR (Extended Detection and Response), advanced penetration testing, and…” Source: company website · checked Sep 4, 2026
23	Corvit Networks LLCIndirect evidence	Houston, TX, United StatesHQ checked Sep 4, 2026	51-200	3
	“Welcome to Corvit Networks LLC, where our passion for cybersecurity has been central to our purpose.” Source: company website · checked Sep 4, 2026
24	RD SECIndirect evidence	Houston, TX, United StatesHQ checked Sep 4, 2026	1-10	2
	“RD SEC is a cybersecurity solutions and services provider dedicated to helping organizations stay protected through a consultative, expertise-driven approach.” Source: company website · checked Sep 4, 2026
25	Code III Solutions LLCPartial evidence	Houston, United StatesHQ checked Sep 4, 2026	1-10	2
	“In today’s dynamic environment security risks are paramount.” Source: company website · checked Sep 4, 2026

Showing 25 of 95 intelligence and security services based in Houston, United States

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Intelligence and security services based in Houston, United States at a glance

As of Sep 4, 2026

1-10Median size (employees)

WashingtonLargest hub · 199 HQs

Contacts with mobile numbers

Sep 4, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

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 95 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 intelligence and security services, 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 “intelligence and security services”. 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 intelligence and security 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 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, 128 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 4, 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.

Intelligence and security services by metro in the United States

Frequently asked

How many intelligence and security services are there based in Houston, United States?

RevenueBase identified 95 intelligence and security 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?

Symposia, headquartered in Houston, tops this list with the largest team on record.

Which city has the most intelligence and security services?

Washington leads with 199 headquartered companies, followed by New York (159) and Houston (95).

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 128 verified decision-maker contacts tracked across these 95 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 4, 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.