Company lists · Data refreshed September 2026
Top 21 Security consulting firms based in San Antonio, United States
RevenueBase identified 43 security consulting firms headquartered in San Antonio, United States as of September 2026 and tracks 522 professional contacts across them, including 175 with verified work emails. New York is the largest hub.
This list covers security consulting firms 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, how directly it supports the match, and when it was last checked. Data refreshed September 6, 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 21 largest security consulting firms based in San Antonio, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | Silotech Group, INCPartial evidence | 134 | |||
“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: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 2 | 58 | ||||
Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 3 | 47 | ||||
“Looking for our Technology and Odoo practice?” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 4 | 45 | ||||
“Digital Information Security Solutions (DBA Digiss) is a San Antonio, Texas-based cybersecurity firm.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 5 | 39 | ||||
“Event Risk has expertise in the areas of security, safety, investigations and risk mitigation.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 6 | 39 | ||||
“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: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 7 | TaureanPartial evidence | 19 | |||
“Taurean helps organizations prevent loss and avoid damaged reputation by securing their most important asset – information.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 8 | 15 | ||||
“CYFOR TECHNOLOGIES LLC is an engineering services company based out of San Antonio, Texas providing support to DOD, NASA and the DOT.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 9 | Open Security, INCIndirect evidence | 14 | |||
“Your business may be at risk of a cyber attack.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 10 | 13 | ||||
“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: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 11 | RedknightIndirect evidence | 9 | |||
“RedKnight provides IT engineering, architecture, and support services to the Department of Defense, State and Local government, and other commercial organizations.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 12 | Lavish Life TechnologiesPartial evidence | 7 | |||
“At Lavish Life Tech, we provide innovative IT consulting for enterprises seeking reliable, confidential, and secure infrastructure.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 13 | Techsage SolutionsIndirect evidence | 7 | |||
“We are Business Consultants with a Technology Focus and CMMC consultency.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 14 | 3 | ||||
“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: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 15 | 3 | ||||
“CyberOnyx Security | 🪖 Veteran-Owned Cybersecurity Partner for Small and Medium Businesses At CyberOnyx Security, we specialize in delivering personalized, proactive, and…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 16 | 2 | ||||
“C2 Threat Solutions is a Woman-owned, Service-Disabled Veteran-Owned, Certified Security Management Consulting Company that offers comprehensive Security-Focused solutions to…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 17 | 2 | ||||
“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: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 18 | Primas InquisitorStrong evidence | 2 | |||
“Our mission at Primas Inquisitor is simple: to provide high-quality investigative and security consulting services for our valued clients.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 19 | Strong Heritage Risk Advisors, LLCIndirect evidence | 1 | |||
“Strong Heritage Risk Advisors (SHRA) helps organizations identify, manage, and reduce cybersecurity, regulatory, and operational risk in today’s rapidly evolving digital landscape.” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 20 | Strategic Digital Defense, LLCIndirect evidence | 1 | |||
“Strategic Digital Defense, LLC is your trusted advisor for the defense of your brand, the protection of your customers' most sensitive information and guarding your firm's…” Source: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
| 21 | 1 | ||||
“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: company website · checked Sep 6, 2026Thanks. The Data Team will review it. | |||||
Showing 21 of 43 security consulting firms based in San Antonio, United States
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Security consulting firms based in San Antonio, United States at a glance
As of Sep 6, 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 San Antonio, over 43 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 consulting firms, 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 San Antonio, United States whose own description of what they do matches “security consulting firms”. 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 security consulting firms, 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 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, 175 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 6, 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 consulting firms by metro in the United States
- Security consulting firms in New York189
- Security consulting firms in Washington139
- Security consulting firms in Houston124
- Security consulting firms in Atlanta118
- Security consulting firms in Austin96
- Security consulting firms in Chicago90
- Security consulting firms in Dallas90
- Security consulting firms in Los Angeles88
- Security consulting firms in Miami88
- Security consulting firms in San Francisco73
- Security consulting firms in Arlington65
- Security consulting firms in Tampa63
- Security consulting firms in Denver56
- Security consulting firms in San Diego55
- Security consulting firms in Alexandria53
- Security consulting firms in Charlotte53
- Security consulting firms in Seattle52
- Security consulting firms in Boston47
- Security consulting firms in Orlando43
- Security consulting firms in San Antonio43
- Security consulting firms in Las Vegas41
- Security consulting firms in Columbia39
- Security consulting firms in Phoenix39
- Security consulting firms in Reston37
- Security consulting firms in Raleigh36
- Security consulting firms in Minneapolis35
- Security consulting firms in Baltimore33
- Security consulting firms in Mclean33
- Security consulting firms in Huntsville29
- Security consulting firms in Columbus28
- Security consulting firms in Herndon28
- Security consulting firms in San Jose28
- Security consulting firms in Pittsburgh27
- Security consulting firms in Ashburn26
- Security consulting firms in Colorado Springs26
- Security consulting firms in Scottsdale26
- Security consulting firms in Philadelphia25
- Security consulting firms in Richmond25
Frequently asked
How many security consulting firms are there based in San Antonio, United States?
RevenueBase identified 43 security consulting firms 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?
Silotech Group, INC, headquartered in San Antonio, tops this list with the largest team on record.
Which city has the most security consulting firms?
New York leads with 189 headquartered companies, followed by Washington (139) and Houston (124).
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 175 verified decision-maker contacts tracked across these 43 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 6, 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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