Company lists · Data refreshed September 2026
Top 25 Security consultancies based in San Antonio, United States
RevenueBase identified 53 security consultancies headquartered in San Antonio, United States as of September 2026 and tracks 1,027 professional contacts across them, including 376 with verified work emails. New York is the largest hub.
This list covers security consultancies headquartered in San Antonio, 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 21, 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 security consultancies based in San Antonio, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 460 contacts → | ||||
Indirect evidence “For more than 45 years, GDBA has developed pioneering strategies and resources for protecting public figures, government agencies, enterprises, and others facing substantial…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 134 contacts → | ||||
Indirect evidence “Silotech Group emerged in 2008, as a valued leader in the consulting space, with over 50 years of accumulative expertise in Advanced Cyber Technologies, Systems Engineering…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 47 contacts → | ||||
Indirect evidence “Looking for our Technology and Odoo practice?” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 46 contacts → | ||||
Partial evidence “Inflowlogistics LLC (DBA Inflow), is a national security firm providing a wide range of expertise and service offerings to the U.S.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 45 contacts → | ||||
Partial evidence “Digital Information Security Solutions (DBA Digiss) is a San Antonio, Texas-based cybersecurity firm.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 39 contacts → | ||||
Partial evidence “Event Risk has expertise in the areas of security, safety, investigations and risk mitigation.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 39 contacts → | ||||
Indirect evidence “Defense Consulting Services LLC (DCS) is a service-disabled veteran-owned firm (SBA-certified 8(a), SDVOSB, SB, SDB, VOSB) headquartered in San Antonio, Texas.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 31 contacts → | ||||
Partial evidence “ESPADA is a proven international security and logistics company that provides superior service in all types of environments.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 19 contacts → | ||||
Partial evidence “Taurean helps organizations prevent loss and avoid damaged reputation by securing their most important asset – information.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 15 contacts → | ||||
Indirect evidence “CYFOR TECHNOLOGIES LLC is an engineering services company based out of San Antonio, Texas providing support to DOD, NASA and the DOT.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 14 contacts → | ||||
Indirect evidence “Your business may be at risk of a cyber attack.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 13 contacts → | ||||
Partial evidence “Fox2Sierra is a full-service consultancy that provides security assessments, tools and training to mitigate the risks of terror and violence faced by government agencies…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 7 contacts → | ||||
Indirect evidence “At Lavish Life Tech, we provide innovative IT consulting for enterprises seeking reliable, confidential, and secure infrastructure.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 7 contacts → | ||||
Indirect evidence “We are Business Consultants with a Technology Focus and CMMC consultency.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 5 contacts → | ||||
Partial evidence “The RMF Security Group is a cadre of highly skilled former Security Control Assessors (SCA) who realized the Information Assurance (IA) and Cyber Surety communities throughout the…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 4 contacts → | ||||
Partial evidence “Mission Statement: Merletti Gonzales has experience in all aspects of security and conducts business in numerous domestic and international venues.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 4 contacts → | ||||
Partial evidence “We are a security access control and CCTV company based in San Antonio, Texas, dedicated to providing top-quality security solutions to protect your home, business, and property.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 3 contacts → | ||||
Partial evidence “CyberOnyx Security | 🪖 Veteran-Owned Cybersecurity Partner for Small and Medium Businesses At CyberOnyx Security, we specialize in delivering personalized, proactive, and…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 3 contacts → | ||||
Partial evidence “A premier, one-stop shop with decades of hands-on leadership experience providing client-specific security and asset management solutions to help your company reduce risk, adapt…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 2 contacts → | ||||
Partial evidence “C2 Threat Solutions is a Woman-owned, Service-Disabled Veteran-Owned, Certified Security Management Consulting Company that offers comprehensive Security-Focused solutions to…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 2 contacts → | ||||
Partial evidence “Lee Global Solutions is a firm that provides a comprehensive range of services including private security, public safety training, private intelligence, business and financial…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 2 contacts → | ||||
Partial evidence “We provide leading security manufactures with a high level of security consulting as well as extreme feedback and professional testing on the products being sold and developed, in…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 2 contacts → | ||||
Partial evidence “Our mission at Primas Inquisitor is simple: to provide high-quality investigative and security consulting services for our valued clients.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1 contacts → | ||||
Indirect evidence “Strong Heritage Risk Advisors (SHRA) helps organizations identify, manage, and reduce cybersecurity, regulatory, and operational risk in today’s rapidly evolving digital landscape.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1 contacts → | ||||
Partial evidence “We are a dedicated, professional, and unbiased group who focus on helping your organization, and your IT department, make sure you are ready to handle the security challenges that…” Source: RevenueBase Database · checked Sep 21, 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: security consultancies. 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 security consultancies.
- Partial evidence
- Its own public description names part of security consultancies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name security consultancies. 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 53 security consultancies based in San Antonio, United States
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Security consultancies based in San Antonio, United States at a glance
As of Sep 21, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for San Antonio, so it is reported there. Company counts and contact totals on this page are exact for San Antonio, over 53 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 security consultancies, 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 San Antonio, United States whose own description of what they do matches “security consultancies”. 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 security consultancies), 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 security consultancies, and records with no verified work email. Companies headquartered outside San Antonio 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, 376 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 21, 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.
Security consultancies by metro in the United States
- Security consultancies in New York255
- Security consultancies in Washington175
- Security consultancies in Houston155
- Security consultancies in Los Angeles130
- Security consultancies in Atlanta127
- Security consultancies in Miami123
- Security consultancies in Dallas122
- Security consultancies in Austin113
- Security consultancies in Chicago110
- Security consultancies in San Francisco86
- Security consultancies in Tampa77
- Security consultancies in Arlington71
- Security consultancies in Denver68
- Security consultancies in San Diego66
- Security consultancies in Boston62
- Security consultancies in Charlotte62
- Security consultancies in Seattle61
- Security consultancies in Orlando60
- Security consultancies in Las Vegas59
- Security consultancies in Phoenix54
- Security consultancies in San Antonio53
- Security consultancies in Alexandria48
- Security consultancies in Raleigh44
- Security consultancies in Baltimore40
- Security consultancies in Columbia40
- Security consultancies in Minneapolis38
- Security consultancies in Portland36
- Security consultancies in Mclean35
- Security consultancies in Philadelphia35
- Security consultancies in Colorado Springs33
- Security consultancies in Columbus32
- Security consultancies in Jacksonville32
- Security consultancies in Pittsburgh32
- Security consultancies in Scottsdale32
- Security consultancies in Ashburn31
- Security consultancies in Fort Lauderdale31
- Security consultancies in Nashville31
- Security consultancies in Reston31
- Security consultancies in Richmond30
- Security consultancies in San Jose30
- Security consultancies in Plano29
- Security consultancies in Wilmington29
- Security consultancies in Sheridan28
- Security consultancies in Huntsville27
- Security consultancies in Herndon25
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 security consultancies, 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 security consultancies are there based in San Antonio, United States?
RevenueBase identified 53 security consultancies headquartered in San Antonio, 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?
Gavin DE Becker & Associates, headquartered in San Antonio, tops this list with the largest team on record.
Which city has the most security consultancies?
New York leads with 255 headquartered companies, followed by Washington (175) and Houston (155).
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 376 verified decision-maker contacts tracked across these 53 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 21, 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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