Company lists · Data refreshed September 2026
Top 25 Information security consultants based in Houston, United States
RevenueBase identified 139 information security consultants headquartered in Houston, United States as of September 2026 and tracks 1,334 professional contacts across them, including 524 with verified work emails. New York is the largest hub.
This list covers information security consultants 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 3, 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.
The 25 largest information security consultants based in Houston, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 311 | ||||
“AMSYS is a nationwide IT Services Provider headquartered in Houston, TX.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 2 | 160 | ||||
“Alchemy Technology Group is an industry-leading IT advisory, consulting, and reseller firm focused on cybersecurity, digital workspace, cloud infrastructure, AI, data & analytics…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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 3, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 3, 2026Thanks. The Data Team will review it. | |||||
| 5 | 30 | ||||
“Zeus Solutions | Empowering Businesses through IT & Risk Management Expertise At Zeus Solutions, based in Houston, we’ve been leading the charge in IT consulting since 2009.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 6 | 26 | ||||
“At Armexa, we protect what matters most.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 7 | 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 3, 2026Thanks. The Data Team will review it. | |||||
| 8 | Neorhino IT SolutionsIndirect evidence | 22 | |||
“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 3, 2026Thanks. The Data Team will review it. | |||||
| 9 | 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 3, 2026Thanks. The Data Team will review it. | |||||
| 10 | 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 3, 2026Thanks. The Data Team will review it. | |||||
| 11 | 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 3, 2026Thanks. The Data Team will review it. | |||||
| 12 | 13 | ||||
“AARC Consultants serves businesses and governmental entities by conducting third party Risk and Resilience assessments, identifying Cyber Security vulnerabilities, developing…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 13 | 11 | ||||
“At Intelos, we drive meaningful change, revolutionizing business capabilities through high-quality IT services.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 14 | 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 3, 2026Thanks. The Data Team will review it. | |||||
| 15 | 9 | ||||
“Blue Lance is a global provider of software for IT Network Security Enhancement, Auditing & Compliance.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 16 | 8 | ||||
“DAAKYI is a cybersecurity, digital trust, and infrastructure innovation company built to secure the modern digital economy.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 17 | Triad InfosecIndirect evidence | 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 3, 2026Thanks. The Data Team will review it. | |||||
| 18 | 7 | ||||
“RevelSec, a Dataprise company, provides a full-suite of solutions and services.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 19 | 7 | ||||
“H5 Strategic Alliances seeks to defend an organization’s infrastructure against cybersecurity threats and vulnerabilities.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 20 | 7 | ||||
“ErascoGroup are highly experienced security experts from multiple industries and back grounds.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 21 | 6 | ||||
“CITSAP specializes in providing Cybersecurity Governance, Risk Management, Compliance (GRC), Fractional CISO services, and outsourced/co-sourced Internal IT Audit services to…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 22 | 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 3, 2026Thanks. The Data Team will review it. | |||||
| 23 | 5 | ||||
“We’re a value-added reseller that helps build, facilitate, and enhance cybersecurity programs by offering customized solutions based on your needs.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 24 | Westerman AssociatesIndirect evidence | 5 | |||
“Westerman Associates is an IT support and consulting firm with more than 40 years of experience helping businesses simplify technology, reduce risk, and keep operations running…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 25 | 5 | ||||
“AA Networks provides world class cybersecurity services and solutions, including Managed Detection and Response (MDR), cybersecurity compliance services, and Active Directory…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 139 information security consultants based in Houston, United States
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Information security consultants based in Houston, United States at a glance
As of Sep 3, 2026Companies by employee count
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 139 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 security consultants, 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 “information security consultants”. 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 information security consultants, 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, 524 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 3, 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 security consultants by metro in the United States
- Information security consultants in New York223
- Information security consultants in Washington147
- Information security consultants in Houston139
- Information security consultants in Atlanta128
- Information security consultants in Chicago106
- Information security consultants in Miami106
- Information security consultants in Dallas102
- Information security consultants in Austin99
- Information security consultants in Tampa85
- Information security consultants in San Francisco80
- Information security consultants in Los Angeles79
- Information security consultants in San Diego65
- Information security consultants in Charlotte63
- Information security consultants in Arlington61
- Information security consultants in Boston61
- Information security consultants in Denver58
- Information security consultants in Phoenix52
- Information security consultants in Seattle51
- Information security consultants in San Antonio50
- Information security consultants in Alexandria48
- Information security consultants in Orlando47
- Information security consultants in Reston43
- Information security consultants in Las Vegas41
- Information security consultants in Raleigh39
- Information security consultants in Portland38
- Information security consultants in Columbia37
- Information security consultants in Ashburn34
- Information security consultants in Mclean34
- Information security consultants in Fairfax33
- Information security consultants in Minneapolis33
- Information security consultants in Baltimore32
- Information security consultants in Columbus30
- Information security consultants in Scottsdale30
- Information security consultants in Herndon29
- Information security consultants in Nashville29
- Information security consultants in Richmond29
- Information security consultants in Huntsville28
- Information security consultants in Wilmington28
- Information security consultants in Philadelphia27
- Information security consultants in Plano27
- Information security consultants in Indianapolis26
- Information security consultants in Pittsburgh26
- Information security consultants in Sheridan26
Frequently asked
How many information security consultants are there based in Houston, United States?
RevenueBase identified 139 information security consultants 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 security consultants?
New York leads with 223 headquartered companies, followed by Washington (147) and Houston (139).
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 524 verified decision-maker contacts tracked across these 139 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 3, 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.
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