Company lists · Data refreshed September 2026
Top 25 Information security consulting firms based in Houston, United States
RevenueBase identified 181 information security consulting firms headquartered in Houston, United States as of September 2026 and tracks 2,109 professional contacts across them, including 668 with verified work emails. Across the United States, New York is the largest hub for this category (280 companies); Houston has 181.
This list covers information security consulting firms 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 14, 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 information security consulting firms based in Houston, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 302 contacts → | ||||
Indirect evidence “AMSYS is a nationwide IT Services Provider headquartered in Houston, TX.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 2 | 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 Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 3 | 161 contacts → | ||||
Partial evidence “Alchemy Technology Group is an industry-leading IT advisory, consulting, and reseller firm focused on cybersecurity, digital workspace, cloud infrastructure, AI, data & analytics…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 4 | 132 contacts → | ||||
Partial 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 14, 2026Thanks. The Data Team will review it. | |||||
| 5 | 124 contacts → | ||||
Partial evidence “The Fulcrum team of technologists are recognized experts in the fields of IT Infrastructure Technology, Security, Service Management and Support.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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 14, 2026Thanks. The Data Team will review it. | |||||
| 7 | 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 Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 8 | 30 contacts → | ||||
Partial evidence “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: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 9 | 29 contacts → | ||||
Partial evidence “Claaps is a specialized enterprise technology consulting firm helping organizations secure, automate, and optimize their business-critical systems.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 10 | 25 contacts → | ||||
Indirect evidence “At Armexa, we protect what matters most.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 11 | 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 14, 2026Thanks. The Data Team will review it. | |||||
| 12 | 23 contacts → | ||||
Indirect evidence “Born in 1998 during the dot-com bubble, neoRhino has evolved into a leading, innovative provider of business technology solutions.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 13 | 21 contacts → | ||||
Indirect evidence “Set Solutions is now a Trace3 Company.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 14 | 19 contacts → | ||||
Indirect evidence “Enstep Technology Solutions | IT That Works for You At Enstep Technology Solutions, we go beyond traditional IT support-we are your strategic technology partner, helping…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 15 | 17 contacts → | ||||
Partial evidence “ThinOps provides technology consulting services around architecture, implementation, migrations, maintenance, or managed services for enterprise deployments particularly…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 16 | 17 contacts → | ||||
Strong evidence “Cyber One Solutions is a Info Security and IT Managed Services and Consulting Company.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 17 | 14 contacts → | ||||
Partial evidence “K3DES is one of the top ten Payment Card Industry consulting firms in the US.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 18 | 14 contacts → | ||||
Strong evidence “About TK We are an SAP Security & Compliance Consulting and Technical Staffing firm that specializes in a wide variety of Engineering Recruiting ranging from Civil, Oil & Gas…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 19 | 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 14, 2026Thanks. The Data Team will review it. | |||||
| 20 | 13 contacts → | ||||
Partial evidence “AARC Consultants serves businesses and governmental entities by conducting third party Risk and Resilience assessments, identifying Cyber Security vulnerabilities, developing…” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 21 | 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 Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 22 | 12 contacts → | ||||
Indirect evidence “ITEGRITI /eye-teg-riti/ We Secure Critical Infrastructure.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 23 | 11 contacts → | ||||
Indirect evidence “At Intelos, we drive meaningful change, revolutionizing business capabilities through high-quality IT services.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 24 | 9 contacts → | ||||
Strong evidence “Swailes & Company is a licensed investigative and security consulting company headquartered in Houston, Texas.” Source: RevenueBase Database · checked Sep 14, 2026Thanks. The Data Team will review it. | |||||
| 25 | 8 contacts → | ||||
Indirect evidence “RevelSec, a Dataprise company, provides a full-suite of solutions and services.” Source: RevenueBase Database · checked Sep 14, 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: information security consulting firms. 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 information security consulting firms.
- Partial evidence
- Its own public description names part of information security consulting firms, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name information security consulting firms. 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 181 information security consulting firms based in Houston, United States
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Information security consulting firms based in Houston, United States at a glance
As of Sep 14, 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 181 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 consulting firms, 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 “information security consulting firms”. 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 information security consulting firms), 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 information security consulting firms, 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, 668 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 14, 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 consulting firms by metro in the United States
- Information security consulting firms in New York280
- Information security consulting firms in Washington186
- Information security consulting firms in Atlanta166
- Information security consulting firms in Austin154
- Information security consulting firms in Dallas146
- Information security consulting firms in Chicago139
- Information security consulting firms in Miami124
- Information security consulting firms in San Francisco114
- Information security consulting firms in Tampa106
- Information security consulting firms in San Diego91
- Information security consulting firms in Los Angeles88
- Information security consulting firms in Arlington78
- Information security consulting firms in Seattle77
- Information security consulting firms in Boston75
- Information security consulting firms in Charlotte75
- Information security consulting firms in Denver73
- Information security consulting firms in Alexandria67
- Information security consulting firms in Orlando62
- Information security consulting firms in Phoenix61
- Information security consulting firms in San Antonio61
- Information security consulting firms in Columbia57
- Information security consulting firms in Las Vegas57
- Information security consulting firms in Raleigh54
- Information security consulting firms in Reston53
- Information security consulting firms in Ashburn51
- Information security consulting firms in Mclean49
- Information security consulting firms in Baltimore48
- Information security consulting firms in Portland46
- Information security consulting firms in Columbus43
- Information security consulting firms in Fairfax43
- Information security consulting firms in Huntsville42
- Information security consulting firms in Minneapolis41
- Information security consulting firms in Plano41
- Information security consulting firms in Indianapolis39
- Information security consulting firms in Philadelphia38
- Information security consulting firms in Richmond38
- Information security consulting firms in Nashville37
- Information security consulting firms in Scottsdale37
- Information security consulting firms in Wilmington37
- Information security consulting firms in Colorado Springs36
- Information security consulting firms in Herndon36
- Information security consulting firms in Pittsburgh36
- Information security consulting firms in Fort Lauderdale35
- Information security consulting firms in San Jose34
- Information security consulting firms in Frisco32
- Information security consulting firms in Irvine31
- Information security consulting firms in Sacramento30
- Information security consulting firms in Rockville29
- Information security consulting firms in Dover28
- Information security consulting firms in Alpharetta27
- Information security consulting firms in Vienna27
- Information security consulting firms in Knoxville25
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 information security consulting firms, 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 information security consulting firms are there based in Houston, United States?
RevenueBase identified 181 information security consulting firms 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 in the United States has the most information security consulting firms?
New York leads the United States with 280 headquartered companies, followed by Washington (186) and Houston (181).
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 668 verified decision-maker contacts tracked across these 181 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 14, 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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