Company lists · Data refreshed September 2026
Top 12 Security consultancy companies based in Austin, United States
RevenueBase identified 48 security consultancy companies headquartered in Austin, United States as of September 2026 and tracks 522 professional contacts across them, including 205 with verified work emails. New York is the largest hub.
This list covers security consultancy companies headquartered in Austin, 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 12 largest security consultancy companies based in Austin, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 167 contacts → | ||||
Indirect evidence “11:11 Systems is a managed infrastructure solutions provider that empowers customers to modernize, protect, and manage mission-critical applications and data, leveraging 11:11’s…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 119 contacts → | ||||
Indirect evidence “Edgile was founded in 2001 to deliver strategic cybersecurity and risk management services to the Fortune 500.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 28 contacts → | ||||
Partial evidence “We live in a world where security is what we all strive for but struggle to find.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 13 contacts → | ||||
Indirect evidence “THE trusted partner for state and local governments in combating cyber threats Our journey began with Splunk and evolved to meet our clients' diverse needs, leading us to…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 8 contacts → | ||||
Partial evidence “ESCO is an Austin, TX, based consulting firm formed in 2002 by public safety and event security professionals completing their assignment on the Salt Lake City Winter Olympic…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 4 contacts → | ||||
Strong evidence “We are a team of experienced and certified crime prevention consultants who provide customized solutions for your security needs.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 3 contacts → | ||||
Partial evidence “Fidelis Risk Advisory helps navigate the leadership challenges and complexity around building and managing information security programs.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 3 contacts → | ||||
Indirect evidence “Founded in 2019, Enigma Advisory is a strategic advisory firm that helps organizations plan, fund, govern, and execute complex initiatives.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 3 contacts → | ||||
Partial evidence “We're a specialty consulting firm that provides information security, data privacy, IT, cyber security assurance and trust expertise.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 2 contacts → | ||||
Strong evidence “zibernetics is a consultancy that helps companies wanting to improve their security operations.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 1 contacts → | ||||
Partial evidence “The Lindemann Group LLC - Executive Security Solutions Welcome to The Lindemann Group LLC, where we redefine executive security with a commitment to discretion, vigilance, and…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 1 contacts → | ||||
Strong evidence “Coursen Security Group (CSG) is a a premier threat management consultant to world leaders, celebrities, Fortune 500 titans, and organizations.” 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 consultancy companies. 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 consultancy companies.
- Partial evidence
- Its own public description names part of security consultancy companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name security consultancy companies. 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 12 of 48 security consultancy companies based in Austin, United States
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Security consultancy companies based in Austin, 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 Austin, so it is reported there. Company counts and contact totals on this page are exact for Austin, over 48 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 consultancy companies, 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 Austin, United States whose own description of what they do matches “security consultancy companies”. 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 consultancy companies), 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 consultancy companies, and records with no verified work email. Companies headquartered outside Austin 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, 205 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 consultancy companies by metro in the United States
- Security consultancy companies in New York96
- Security consultancy companies in Washington82
- Security consultancy companies in Houston66
- Security consultancy companies in Atlanta54
- Security consultancy companies in Los Angeles52
- Security consultancy companies in Miami49
- Security consultancy companies in Austin48
- Security consultancy companies in Chicago48
- Security consultancy companies in Tampa43
- Security consultancy companies in San Francisco39
- Security consultancy companies in Dallas38
- Security consultancy companies in Arlington37
- Security consultancy companies in Denver31
- Security consultancy companies in Phoenix30
- Security consultancy companies in Alexandria27
- Security consultancy companies in Boston27
- Security consultancy companies in Reston27
- Security consultancy companies in Charlotte26
- Security consultancy companies in Columbia26
- Security consultancy companies in Seattle26
- Security consultancy companies in Las Vegas25
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 consultancy companies, 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 consultancy companies are there based in Austin, United States?
RevenueBase identified 48 security consultancy companies headquartered in Austin, 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?
Ntirety, headquartered in Austin, tops this list with the largest team on record.
Which city has the most security consultancy companies?
New York leads with 96 headquartered companies, followed by Washington (82) and Houston (66).
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 205 verified decision-maker contacts tracked across these 48 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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