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Cybersecurity companies in the USA: 4,065 companies

Cybersecurity companies in the USA that we could find with a working website: 4,065 companies, each with website, LinkedIn page, industry, size, city, state and founding year. 4,065 have a LinkedIn page and 915 have an exact headcount.

Preview 25 below. Put in your work email and you get 1,000 of them as a CSV, the most complete rows first. Answer three short questions after that to get all 4,065.

Free CSV

Get 1,000 cybersecurity companies as a CSV, free.

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Preview: 25 of 4,065

CompanyWebsiteEmployeesLocationFounded
Array Networksarraynetworks.com201-500Milpitas, California2000
Cisco Talostalosintel.com201-500Fulton, Maryland
Vilogicsvilogics.com201-500Naples, Florida2008
360 Privacy360privacy.io51-200Nashville, Tennessee2019
Bionic (Business/Productivity Software)bionic.ai51-200Palo Alto, California2019
CertifIDcertifid.com51-200Austin, Texas2017
Cybrseccybrsecurity.com51-200Kansas City, Missouri
Data Doctorsdatadoctors.com51-200Mesa, Arizona1988
Db Cybertechdbcybertech.com51-200San Diego, California2012
Drawbridge Partnersdrawbridgeco.com51-200Palm Beach Gardens, Florida2018
Ec-Council Foundationeccouncilfoundation.org51-200Albuquerque, New Mexico
Elasticaelastica.net51-200Mountain View, California2012
Humiohumio.com51-200Seattle, Washington2016
Neohapsis (Acquired by KSR)neohapsis.com51-200Chicago, Illinois1997
Savanture, Inc.savanture.com51-200New Bern, North Carolina2013
Sentrywiresentrywire.com51-200Hanover, Maryland
Sharkstrikersharkstriker.com51-200Wilmington, Delaware2020
Torqtorq.io51-200New York, New York2020
Toyota Tsusho Systems US, Inc.ttsystems.com51-200Plano, Texas2011
Video Storage Solutionsvideoappliances.com51-200Buffalo Grove, Illinois2019
3cs It Services3csitservices.com11-50Lorton, Virginia1993
7 Vikings Security, LLC7vikingssecurity.com11-50Colorado Springs, Colorado2021
Accudata Service, Inc.accudataservice.com11-50Lauderhill, Florida1990
Acit Incacit-usa.com11-50Mercer Island, Washington
Aegis Innovatorsaegisinnovators.com11-50San Diego, California1986

LinkedIn URLs, industry, exact headcount and ownership are in the CSV. Get 1,000 rows free.

What's in the full list

SizeCompaniesShare
11-50 employees2,90671%
51-200 employees81420%
201-500 employees1764%
501-1000 employees862%
1000+ employees832%
Top locationsCompanies
California829
Texas332
New York311
Florida308
Virginia270
Maryland180
Massachusetts151
New Jersey120

Columns

  • company: Company name
  • website: Root domain, one row per website
  • linkedin_url: LinkedIn company page
  • industry: The company's own LinkedIn industry label
  • employee_range: Size band (11-50, 51-200 and so on)
  • employees: Exact headcount, where we have it
  • city, state, country: Headquarters location
  • founded: Year founded
  • ownership: Investor-backed, Private, Public or Acquired, where we have it

There are no people or emails in this file. One row per company, and every company sits in exactly one of our 30 industry lists.

How good is it?

A company lands here because its own LinkedIn industry label says so. Spot checks put that right 85 to 90% of the time. We dropped companies without a website, ones marked out of business, and duplicate websites and LinkedIn pages. It is a good first cut of a TAM, and it is not verified row by row.

The list stops at the company. Turning it into pipeline means finding the right people, verified emails, and a reason to reach out now. That is what I build. Want this list with the right people and verified emails? Talk to me, or price it yourself with the TAM calculator.

FAQ

Is this list really free?
Yes. Enter your first name, work email and company and you get 1,000 of the 4,065 companies as a CSV right away, plus a copy of the link by email. To get all 4,065, answer three short questions after that. There is nothing to pay and no account to make.
Does the list include contacts or email addresses?
No. It is a company list: name, website, LinkedIn page, industry, size, location and founding year. If you want the right people at these companies with verified emails, that is the work OneGTM does, so reply to the email or book a call.
Where does the data come from?
Company records come from the People Data Labs Free Company Dataset (CC BY 4.0). Exact headcount and ownership come from a separate company database and are only attached when the name and size line up. We removed duplicates, dead companies and rows without a website.
How accurate is it?
A company is on this list because its own LinkedIn industry label says so. Spot checks put it right 85 to 90% of the time. Treat it as a strong starting point for your TAM, not a verified list.
Why do I need a work email?
The list goes to people building pipeline at a business, and we send a copy of the download link to the address you give. Personal inboxes like Gmail and throwaway addresses are not accepted.

Company data: People Data Labs Free Company Dataset, licensed CC BY 4.0. Filtered, deduplicated and recased by OneGTM. List built November 12, 2026.