Company lists · Data refreshed September 2026

Top 25 Cybersecurity software companies based in the United States

Name: Cybersecurity software companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 1, 2026 1,708 companies tracked

RevenueBase identified 1,708 cybersecurity software companies headquartered in the United States as of September 2026 and tracks 77,176 professional contacts across them, including 31,593 with verified work emails and 20,236 with mobile numbers. New York is the largest hub.

This list covers cybersecurity software companies headquartered in the 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 1, 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.

How to read this list RevenueBase Smart Search rating on every row Refreshed Sep 1, 2026 86% judged on-target in blind review

1,708Companies

77,176Contacts tracked

31,593Verified emails

20,236Mobile numbers

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The 25 largest cybersecurity software companies based in the United States

Ranked by team size

Top 25 of 1,708 cybersecurity software companies based in the United States, ranked by team size, largest first. Data refreshed Sep 1, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity software companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Symantec	Partial evidence	San Jose, CA, United States	10001+	11,179 contacts →
	Partial evidence “Your backstage pass to the most epic cybersecurity solutions on the market for Endpoint, Network, Data and Cloud security.” Source: RevenueBase Database · checked Sep 1, 2026
2	Bugcrowd	Indirect evidence	San Francisco, CA, United States	n/a	3,566 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 1, 2026
3	Trellix	Partial evidence	Plano, TX, United States	1,001-5,000	3,490 contacts →
	Partial evidence “Trellix is a global cybersecurity company delivering intelligence-led cyber resilience for security-conscious organizations at any stage of their journey.” Source: RevenueBase Database · checked Sep 1, 2026
4	Sentinelone	Partial evidence	Mountain View, CA, United States	1,001-5,000	3,046 contacts →
	Partial evidence “SentinelOne is the world's leading AI-powered cybersecurity platform.” Source: RevenueBase Database · checked Sep 1, 2026
5	Bitdefender	Partial evidence	Fort Lauderdale, FL, United States	1,001-5,000	2,141 contacts →
	Partial evidence “Bitdefender is a cybersecurity leader delivering best-in-class threat prevention, detection, and response solutions worldwide.” Source: RevenueBase Database · checked Sep 1, 2026
6	Barracuda	Partial evidence	Alpharetta, GA, United States	1,001-5,000	2,108 contacts →
	Partial evidence “Barracuda is a leading global cybersecurity company providing complete protection against complex threats for all size business.” Source: RevenueBase Database · checked Sep 1, 2026
7	Fortra	Partial evidence	Eden Prairie, MN, United States	1,001-5,000	1,640 contacts →
	Partial evidence “Fortra delivers AI-amplified cybersecurity solutions that help organizations use and protect data with confidence.” Source: RevenueBase Database · checked Sep 1, 2026
8	Reliaquest	Indirect evidence	Sandy, UT, United States	1,001-5,000	1,252 contacts →
	Indirect evidence “ReliaQuest exists to Make Security Possible.” Source: RevenueBase Database · checked Sep 1, 2026
9	Thales Cybersecurity Products	Partial evidence	Austin, TX, United States	1,001-5,000	1,252 contacts →
	Partial evidence “Thales is a global leader in cybersecurity, helping the most trusted organizations in the world protect their most critical applications, data, and identities anywhere at scale.” Source: RevenueBase Database · checked Sep 1, 2026
10	Imperva	Indirect evidence	Austin, TX, United States	10001+	1,211 contacts →
	Indirect evidence “On Dec.” Source: RevenueBase Database · checked Sep 1, 2026
11	Watchguard Technologies	Indirect evidence	Seattle, WA, United States	1,001-5,000	1,054 contacts →
	Indirect evidence “WatchGuard® Technologies, Inc.” Source: RevenueBase Database · checked Sep 1, 2026
12	Absolute Security	Indirect evidence	Seattle, WA, United States	501-1,000	789 contacts →
	Indirect evidence “Absolute Security is partnered with more than 28 of the world’s leading endpoint device manufacturers, embedded in the firmware of 600 million devices, trusted by global…” Source: RevenueBase Database · checked Sep 1, 2026
13	Telos Corporation	Indirect evidence	Las Vegas, NV, United States	501-1,000	636 contacts →
	Indirect evidence “Telos empowers and protects the world’s most security-conscious organizations with solutions for continuous security assurance of individuals, systems, and information.” Source: RevenueBase Database · checked Sep 1, 2026
14	Vikingcloud	Partial evidence	Chicago, IL, United States	1,001-5,000	618 contacts →
	Partial evidence “VikingCloud delivers battle-tested cybersecurity and compliance solutions that simply work.” Source: RevenueBase Database · checked Sep 1, 2026
15	Ultraviolet Cyber	Indirect evidence	Phoenix, AZ, United States	501-1,000	517 contacts →
	Indirect evidence “UltraViolet Cyber is the only security operations partner that unifies red, blue, and purple team capabilities into one integrated program.” Source: RevenueBase Database · checked Sep 1, 2026
16	Guidance Software	Indirect evidence	Las Vegas, NV, United States	501-1,000	496 contacts →
	Indirect evidence “Guidance (NASDAQ: GUID) exists to turn chaos and the unknown into order and the known-so that companies and their customers can go about their daily lives as usual without worry…” Source: RevenueBase Database · checked Sep 1, 2026
17	Securityhq	Partial evidence	New York, NY, United States	501-1,000	492 contacts →
	Partial evidence “SecurityHQ, a global cybersecurity company pioneering Security Performance Engineering for stronger operational performance and resilience.” Source: RevenueBase Database · checked Sep 1, 2026
18	ARETE	Indirect evidence	New York, NY, United States	201-500	462 contacts →
	Indirect evidence “Arete helps organizations stay ahead of cyber threats with standardized, intelligence-led detection, response, resolution, and resilience capabilities.” Source: RevenueBase Database · checked Sep 1, 2026
19	DUO Security	Indirect evidence	Austin, TX, United States	501-1,000	429 contacts →
	Indirect evidence “We are Duo, and we’re here to democratize security.” Source: RevenueBase Database · checked Sep 1, 2026
20	RED Canary, A Zscaler Company	Indirect evidence	Denver, CO, United States	201-500	402 contacts →
	Indirect evidence “Red Canary stops cyber threats no one else does, so organizations can fearlessly pursue their missions.” Source: RevenueBase Database · checked Sep 1, 2026
21	Novacoast	Strong evidence	Arlington, TX, United States	201-500	378 contacts →
	Strong evidence “Novacoast is an international cybersecurity company specializing in IT services and software development.” Source: RevenueBase Database · checked Sep 1, 2026
22	K7 Computing	Indirect evidence	Cerritos, CA, United States	201-500	358 contacts →
	Indirect evidence “K7 Computing is a global cyber security pioneer with over 30 year’s expertise in the cyber security industry.” Source: RevenueBase Database · checked Sep 1, 2026
23	horizon3.ai	Partial evidence	Durham, NC, United States	201-500	356 contacts →
	Partial evidence “Horizon3.ai answers the two most important questions in cybersecurity: If someone tried to compromise us, would we hold up?” Source: RevenueBase Database · checked Sep 1, 2026
24	Reversinglabs	Partial evidence	Cambridge, MA, United States	201-500	343 contacts →
	Partial evidence “ReversingLabs is the trusted name in file and software security.” Source: RevenueBase Database · checked Sep 1, 2026
25	Sentar INC	Indirect evidence	San Antonio, TX, United States	201-500	333 contacts →
	Indirect evidence “Sentar, an employee-owned company, is a leading cyber-intelligence solutions provider focused on the National Security sector.” Source: RevenueBase Database · checked Sep 1, 2026

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: cybersecurity software 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 cybersecurity software companies.
Partial evidence: Its own public description names part of cybersecurity software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity software 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 1,708 cybersecurity software companies based in the United States

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Cybersecurity software companies based in the United States at a glance

As of Sep 1, 2026

40.9%Verified-email coverage

26.2%Mobile-number coverage

45.2Average contacts per company

11-50Median size (employees)

3.8%Largest-city concentration · New York

Sep 1, 2026Page data refreshed

Companies by employee count

1-10

790

11-50

596

51-200

204

201-500

501-1,000

1,001-5,000

10001+

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 cybersecurity software 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 the United States whose own description of what they do matches “cybersecurity software 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 cybersecurity software 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 cybersecurity software companies, and records with no verified work email. Companies headquartered outside United States 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, 31,593 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 1, 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.

Cybersecurity software companies by metro

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 cybersecurity software 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 cybersecurity software companies are there based in the United States?

RevenueBase identified 1,708 cybersecurity software companies headquartered in the 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?

Symantec, headquartered in San Jose, tops this list with the largest team on record.

Which city has the most cybersecurity software companies?

New York leads with 65 headquartered companies, followed by San Francisco (41) and Miami (37).

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 31,593 verified decision-maker contacts tracked across these 1,708 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 1, 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.