Company lists · Data refreshed September 2026
Top 25 Critical infrastructure security consulting companies based in Austin, United States
RevenueBase identified 88 critical infrastructure security consulting companies headquartered in Austin, United States as of September 2026 and tracks 848 professional contacts across them, including 250 with verified work emails. Across the United States, Washington is the largest hub for this category (193 companies); Austin has 88.
This list covers critical infrastructure security consulting 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 27, 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 critical infrastructure security consulting companies based in Austin, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 179 contacts → | ||||
Indirect evidence “Signature Science's consultants serve government and commercial clients through a wide array of technical offerings.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 2 | 167 contacts → | ||||
Strong 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 27, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 4 | 59 contacts → | ||||
Partial evidence “For over 40 years, Sheshunoff Consulting + Solutions has been committed to helping financial institutions manage risk and drive financial improvement.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 6 | 19 contacts → | ||||
Strong evidence “B Technology is committed to successfully delivering IT infrastructure and cyber security solutions that enable our customers’ mission.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 7 | 17 contacts → | ||||
Indirect evidence “BugSwagger is a premier cybersecurity firm specializing in advanced penetration testing solutions.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 8 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 9 | 13 contacts → | ||||
Partial evidence “WorleyByrd Roofing & Restoration Is A Technology-Enabled Organization Focused On Reconstructing And Protecting Our Clients’ Vital Infrastructures Where They Live And Work.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 10 | 8 contacts → | ||||
Strong 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 27, 2026Thanks. The Data Team will review it. | |||||
| 11 | 8 contacts → | ||||
Indirect evidence “Across the country, state governments are battling increasingly sophisticated IT challenges, even as their budgets shrink and public scrutiny grows.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 12 | 6 contacts → | ||||
Partial evidence “Aspiryon is a provider of Information Technology and Physical Security Solutions, that sets a standard of excellence for the clients that we serve.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 13 | 6 contacts → | ||||
Strong evidence “Critical Infrastructure Cybersecurity + Control” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 14 | 5 contacts → | ||||
Partial evidence “Gardient provides managed services, systems integration and consulting.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 15 | 4 contacts → | ||||
Partial evidence “HOPZERO uses a patented, next-gen network security solution to protect enterprise data.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 16 | 3 contacts → | ||||
Partial evidence “Data Defense Partners is your strategic ally in securing today’s digital enterprise.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 17 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 18 | 3 contacts → | ||||
Strong 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 27, 2026Thanks. The Data Team will review it. | |||||
| 19 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 20 | 2 contacts → | ||||
Strong evidence “ResilientGrid's vision is to secure critical infrastructure resiliency and reliability against increasing threats and complexity.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 21 | 2 contacts → | ||||
Strong evidence “Critical Preparedness, LLC is a full-service emergency and disaster management consulting firm providing Preparedness, Response, Recovery and Mitigation consulting services to…” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 22 | 2 contacts → | ||||
Partial evidence “zibernetics is a consultancy that helps companies wanting to improve their security operations.” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 23 | 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 27, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1 contacts → | ||||
Partial evidence “Fusing Physical and Cyber Security I The Science of Fortification” Source: RevenueBase Database · checked Sep 27, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1 contacts → | ||||
Partial evidence “We provide CFIUS, DCSA, and Team Telecom mitigation experts for Security Director, Outside Director, Proxy Holder, Voting Trustee, Divestment Trustee, Security Officer, Third…” Source: RevenueBase Database · checked Sep 27, 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: critical infrastructure security consulting 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 critical infrastructure security consulting companies.
- Partial evidence
- Its own public description names part of critical infrastructure security consulting companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name critical infrastructure security consulting 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 25 of 88 critical infrastructure security consulting companies based in Austin, United States
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Critical infrastructure security consulting companies based in Austin, United States at a glance
As of Sep 27, 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 88 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 critical infrastructure security consulting 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 “critical infrastructure security consulting 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 critical infrastructure security consulting 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 critical infrastructure security consulting 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, 250 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 27, 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.
Critical infrastructure security consulting companies by metro in the United States
- Critical infrastructure security consulting companies in Washington193
- Critical infrastructure security consulting companies in New York173
- Critical infrastructure security consulting companies in Houston126
- Critical infrastructure security consulting companies in Atlanta115
- Critical infrastructure security consulting companies in Dallas85
- Critical infrastructure security consulting companies in Arlington81
- Critical infrastructure security consulting companies in Miami77
- Critical infrastructure security consulting companies in Chicago73
- Critical infrastructure security consulting companies in Los Angeles72
- Critical infrastructure security consulting companies in Tampa62
- Critical infrastructure security consulting companies in San Francisco61
- Critical infrastructure security consulting companies in Alexandria60
- Critical infrastructure security consulting companies in Mclean57
- Critical infrastructure security consulting companies in Charlotte53
- Critical infrastructure security consulting companies in San Antonio53
- Critical infrastructure security consulting companies in Denver52
- Critical infrastructure security consulting companies in San Diego51
- Critical infrastructure security consulting companies in Boston49
- Critical infrastructure security consulting companies in Reston49
- Critical infrastructure security consulting companies in Columbia45
- Critical infrastructure security consulting companies in Seattle45
- Critical infrastructure security consulting companies in Ashburn44
- Critical infrastructure security consulting companies in Las Vegas44
- Critical infrastructure security consulting companies in Herndon42
- Critical infrastructure security consulting companies in Phoenix38
- Critical infrastructure security consulting companies in Huntsville37
- Critical infrastructure security consulting companies in Orlando37
- Critical infrastructure security consulting companies in Fairfax34
- Critical infrastructure security consulting companies in Vienna34
- Critical infrastructure security consulting companies in Minneapolis33
- Critical infrastructure security consulting companies in Raleigh33
- Critical infrastructure security consulting companies in Colorado Springs31
- Critical infrastructure security consulting companies in Baltimore30
- Critical infrastructure security consulting companies in Richmond30
- Critical infrastructure security consulting companies in Bethesda28
- Critical infrastructure security consulting companies in Columbus27
- Critical infrastructure security consulting companies in Scottsdale27
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 critical infrastructure security consulting 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 critical infrastructure security consulting companies are there based in Austin, United States?
RevenueBase identified 88 critical infrastructure security consulting 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?
Signature Science, LLC, headquartered in Austin, tops this list with the largest team on record.
Which city in the United States has the most critical infrastructure security consulting companies?
Washington leads the United States with 193 headquartered companies, followed by New York (173) and Houston (126). Austin has 88.
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 250 verified decision-maker contacts tracked across these 88 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 27, 2026.
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Critical infrastructure security consulting companies by geography
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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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