Company lists · Data refreshed September 2026

Top 25 Security infrastructure startups based in the United States

RevenueBase identified 432 company matches for security infrastructure startups associated with the United States as of September 2026 and tracks 47,513 professional contacts across them, including 25,249 with verified work emails. San Francisco is the largest hub.

This list covers company matches for security infrastructure startups associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 29, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Sep 29, 2026 How this list was built
432Companies
47,513Contacts tracked
25,249Verified emails
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The 25 largest security infrastructure startups based in the United States

Ranked by team size
Top 25 of 432 company matches for security infrastructure startups based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchSanta Clara, CA, United StatesHQ recorded Sep 29, 202610001+18,431 contacts →

Exact match

“Palo Alto Networks, the global cybersecurity leader, is shaping the cloud-centric future with technology that is transforming the way people and organizations operate.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2Exact matchSunnyvale, CA, United StatesHQ recorded Sep 29, 202610001+14,289 contacts →

Exact match

“Fortinet makes possible a digital world that we can always trust through its mission to protect people, devices, and data everywhere.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3Exact matchSan Francisco, CA, United StatesHQ recorded Sep 29, 2026n/a3,649 contacts →

Exact match

“We are a crowdsourced security company that safeguards organizations' assets from sophisticated threat actors before they can strike-by uniting our customers with trusted hackers…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4Exact matchSanta Clara, CA, United StatesHQ recorded Sep 29, 20261,001-5,0002,813 contacts →

Exact match

“Infoblox unites networking and security to deliver unmatched performance and protection.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5Exact matchAustin, TX, United StatesHQ recorded Sep 29, 20261,001-5,0001,636 contacts →

Exact match

“Forcepoint simplifies security for global businesses and governments.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6Exact matchAustin, TX, United StatesHQ recorded Sep 29, 202610001+1,217 contacts →

Exact match

“On Dec.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7Exact matchSan Jose, CA, United StatesHQ recorded Sep 29, 2026501-1,000673 contacts →

Exact match

“A10 Networks provides security and infrastructure solutions for on-premises, hybrid cloud, and edge-cloud environments.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8Exact matchPrinceton, NJ, United StatesHQ recorded Sep 29, 2026201-500276 contacts →

Exact match

“In the ever-growing world of Cloud Computing, Big Data and the Internet of Things, NIKSUN® is the industry leader in making the unknown known.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9Exact matchSanta Ana, CA, United StatesHQ recorded Sep 29, 2026201-500240 contacts →

Exact match

“Hirsch is a global leader in unified security solutions, helping enterprise and SMB organisations integrate perimeter security, intrusion detection, access control, video…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10Exact matchSanta Clara, CA, United StatesHQ recorded Sep 29, 20261,001-5,000230 contacts →

Exact match

“Hillstone Networks’ Integrative Cyber Security approach delivers coverage, control, and consolidation to secure digital transformation for more than enterprises worldwide.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11Exact matchSalt Lake City, UT, United StatesHQ recorded Sep 29, 2026201-500202 contacts →

Exact match

“Stone Security has been driving the implementation of network-based surveillance, access control and intrusion systems for over 15 years.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12Exact matchBroomfield, CO, United StatesHQ recorded Sep 29, 202651-200141 contacts →

Exact match

“eSoft is a leader in providing Simply Better Network Security™ to businesses of nearly any size.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13Exact matchCincinnati, OH, United StatesHQ recorded Sep 29, 202651-200138 contacts →

Exact match

“Cadre is a network and information security solutions provider that serves large and medium-sized firms.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14Exact matchPortland, OR, United StatesHQ recorded Sep 29, 2026201-500128 contacts →

Exact match

“Tripwire is proud to be part of Fortra’s comprehensive cybersecurity portfolio.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15Exact matchRockville, MD, United StatesHQ recorded Sep 29, 202651-200103 contacts →

Exact match

“August Schell is dedicated to delivering agile and innovative cybersecurity solutions to proactively defend and protect organization’s data against cyber attacks.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16Exact matchBurlington, MA, United StatesHQ recorded Sep 29, 202651-20068 contacts →

Exact match

“About Privafy We are redefining how to protect Data-in-Motion.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17Exact matchNew York, NY, United StatesHQ recorded Sep 29, 202651-20065 contacts →

Exact match

“RevelSI is a global cybersecurity, AI, software, and infrastructure services organization.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18Exact matchColumbia, MD, United StatesHQ recorded Sep 29, 2026501-1,00063 contacts →

Exact match

“Sourcefire, Inc.(Nasdaq:FIRE), a world leader in intelligent cybersecurity solutions, is transforming the way global mid- to large-size organizations and government agencies…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19Exact matchArlington, VA, United StatesHQ recorded Sep 29, 202651-20058 contacts →

Exact match

“CYBASTION develops robust world-class cybersecurity solutions tailored to suit the needs of different businesses, governments and public sector entities.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20Exact matchColumbia, MD, United StatesHQ recorded Sep 29, 202651-20057 contacts →

Exact match

“We operate at the intersection of network engineering and cybersecurity, providing secure, scalable, and high-performing architectures for our customers.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21Exact matchMiami, FL, United StatesHQ recorded Sep 29, 202651-20055 contacts →

Exact match

“Founded in 1980, Compuquip is a family-owned and operated advanced technology solutions partner for businesses throughout Florida and beyond.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22Exact matchPittsburgh, PA, United StatesHQ recorded Sep 29, 202651-20054 contacts →

Exact match

“Certes has been a pioneer in delivering advanced cybersecurity solutions focused on Data Protection and Risk Mitigation (DPRM) for more than 20 years.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23Exact matchSalem, NH, United StatesHQ recorded Sep 29, 2026201-50048 contacts →

Exact match

“Ebryx LLC is a 360° cybersecurity and secure engineering company trusted by enterprises, startups, and governments to safeguard critical digital ecosystems.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24Exact matchIndianapolis, IN, United StatesHQ recorded Sep 29, 202611-5043 contacts →

Exact match

“Firewalls.com offers cutting edge products and services designed to provide cost-effective IT solutions in the age of information.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25Exact matchUnited StatesHQ recorded Sep 29, 202651-20040 contacts →

Exact match

“Zellic specializes in securing emerging technologies.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase

Showing 25 of 432 security infrastructure startups based in the United States

See the full list, filter by size, metro and specialty, and access 25,249 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Security infrastructure startups based in the United States at a glance

As of Sep 29, 2026
53.1%Verified-email coverage
110.0Average contacts per company
1-10Median size (employees)
4.4%Largest-city concentration · San Francisco
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
229
11-50
129
51-200
44
201-500
14
501-1,000
3
1,001-5,000
6
5,001-10,000
1
10001+
5

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 432 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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
Company records associated with the United States whose business descriptions match “security infrastructure startups” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 25,249 professional contacts with verified work emails across the full matched dataset. 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 29, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “security infrastructure startups”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many security infrastructure startups are there based in the United States?

RevenueBase identified 432 company matches for security infrastructure startups associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Palo Alto Networks tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most security infrastructure startups?

San Francisco leads with 19 company records, followed by Austin (13) and New York (13).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 25,249 professional contacts with verified work emails tracked across these 432 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 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.