Company lists · Data refreshed September 2026

Top 25 Cybersecurity companies worldwide

Name: Cybersecurity companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 14, 2026 29,636 companies tracked

RevenueBase identified 29,636 cybersecurity companies worldwide as of September 2026 and tracks 779,699 professional contacts across them, including 265,852 with verified work emails and 0 with mobile numbers. The United States is the largest market and London the largest hub.

This list covers cybersecurity companies worldwide, 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 14, 2026. Country and city lists for cybersecurity companies follow the table.

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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 14, 2026 86% judged on-target in blind review

29,636Companies

779,699Contacts tracked

265,852Verified emails

0Mobile numbers

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The 25 largest cybersecurity companies worldwide

Ranked by team size

Top 25 of 29,636 cybersecurity companies worldwide, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity 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	CISCO	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 14, 2026	10001+	137,277 contacts →
	Indirect evidence “Cisco is the worldwide technology leader that is revolutionizing the way organizations connect and protect in the AI era.” Source: RevenueBase Database · checked Sep 14, 2026
2	Palo Alto Networks	Strong evidence	Santa Clara, CA, United StatesHQ checked Sep 14, 2026	10001+	18,431 contacts →
	Strong evidence “Palo Alto Networks, the global cybersecurity leader, is shaping the cloud-centric future with technology that is transforming the way people and organizations operate.” Source: RevenueBase Database · checked Sep 14, 2026
3	Fortinet	Indirect evidence	Sunnyvale, CA, United StatesHQ checked Sep 14, 2026	10001+	14,289 contacts →
	Indirect evidence “Fortinet makes possible a digital world that we can always trust through its mission to protect people, devices, and data everywhere.” Source: RevenueBase Database · checked Sep 14, 2026
4	Symantec	Strong evidence	San Jose, CA, United StatesHQ checked Sep 14, 2026	10001+	11,169 contacts →
	Strong 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 14, 2026
5	Crowdstrike	Strong evidence	Remote, United StatesHQ checked Sep 14, 2026	5,001-10,000	10,118 contacts →
	Strong evidence “CrowdStrike (Nasdaq: CRWD), a global cybersecurity leader, has redefined modern security with the world’s most advanced cloud-native platform for protecting critical areas of…” Source: RevenueBase Database · checked Sep 14, 2026
6	Check Point Software	Indirect evidence	Redwood City, CA, United StatesHQ checked Sep 14, 2026	5,001-10,000	7,668 contacts →
	Indirect evidence “Check Point Software Technologies Ltd.” Source: RevenueBase Database · checked Sep 14, 2026
7	Giesecke Devrient	Indirect evidence	Munich, GermanyHQ checked Sep 14, 2026	10001+	6,240 contacts →
	Indirect evidence “Giesecke+Devrient (G+D) is a global SecurityTech company headquartered in Munich, Germany.” Source: RevenueBase Database · checked Sep 14, 2026
8	Hackerone	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 14, 2026	n/a	6,058 contacts →
	Indirect evidence “HackerOne is a global leader in Continuous Threat Exposure Management (CTEM) and the only solution provider that pairs the simultaneous trust of the Fortune 500 and the world's…” Source: RevenueBase Database · checked Sep 14, 2026
9	Cohesity	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 14, 2026	1,001-5,000	4,962 contacts →
	Indirect evidence “A modern platform for the AI era Our mission at Cohesity is simple: to protect, secure, and provide insights into the world’s data.” Source: RevenueBase Database · checked Sep 14, 2026
10	Trend Micro	Strong evidence	Yoyogi, JapanHQ checked Sep 14, 2026	5,001-10,000	4,942 contacts →
	Strong evidence “We’re a global cybersecurity leader, helping to make the world safe for exchanging digital information.” Source: RevenueBase Database · checked Sep 14, 2026
11	Sophos	Strong evidence	Abingdon, United KingdomHQ checked Sep 14, 2026	5,001-10,000	4,925 contacts →
	Strong evidence “Sophos is a cybersecurity leader defending organizations globally with an AI-driven platform and expert-led services.” Source: RevenueBase Database · checked Sep 14, 2026
12	F-Secure Corporation	Indirect evidence	Helsinki, FinlandHQ checked Sep 14, 2026	n/a	4,766 contacts →
	Indirect evidence “F-Secure is a human-first, AI-powered consumer cyber security experience company with 38 years of expertise in tackling digital threats.” Source: RevenueBase Database · checked Sep 14, 2026
13	Rubrik	Indirect evidence	Palo Alto, CA, United StatesHQ checked Sep 14, 2026	1,001-5,000	4,448 contacts →
	Indirect evidence “Rubrik (NYSE: RBRK), the Security and AI company, operates at the intersection of data protection, cyber resilience and enterprise AI acceleration.” Source: RevenueBase Database · checked Sep 14, 2026
14	Kaseya	Strong evidence	Miami, FL, United StatesHQ checked Sep 14, 2026	5,001-10,000	4,276 contacts →
	Strong evidence “Kaseya is the leading global provider of AI-powered IT management and cybersecurity software.” Source: RevenueBase Database · checked Sep 14, 2026
15	Commvault	Indirect evidence	Tinton Falls, NJ, United StatesHQ checked Sep 14, 2026	1,001-5,000	4,032 contacts →
	Indirect evidence “Commvault (NASDAQ: CVLT) is a leader in unified resilience at enterprise scale.” Source: RevenueBase Database · checked Sep 14, 2026
16	Kaspersky	Indirect evidence	Stadtkreis 1 Altstadt, FranceHQ checked Sep 14, 2026	5,001-10,000	3,822 contacts →
	Indirect evidence “Our mission is simple – building a safer world.” Source: RevenueBase Database · checked Sep 14, 2026
17	Orange Cyberdefense	Strong evidence	Nanterre, FranceHQ checked Sep 14, 2026	1,001-5,000	3,673 contacts →
	Strong evidence “Orange Cyberdefense is the expert cybersecurity business unit of the Orange Group.” Source: RevenueBase Database · checked Sep 14, 2026
18	Bugcrowd	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 14, 2026	n/a	3,649 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 14, 2026
19	Trellix	Strong evidence	Plano, TX, United StatesHQ checked Sep 14, 2026	1,001-5,000	3,447 contacts →
	Strong 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 14, 2026
20	Quest Software	Indirect evidence	Austin, TX, United StatesHQ checked Sep 14, 2026	1,001-5,000	3,206 contacts →
	Indirect evidence “At Quest Software, we help organizations build modern, trusted foundations for AI.” Source: RevenueBase Database · checked Sep 14, 2026
21	Arctic Wolf	Indirect evidence	Eden Prairie, MN, United StatesHQ checked Sep 14, 2026	1,001-5,000	3,145 contacts →
	Indirect evidence “Every year new technologies, vendors, and solutions emerge-yet despite this constant innovation, high-profile breaches are all over the headlines.” Source: RevenueBase Database · checked Sep 14, 2026
22	Qualys	Indirect evidence	Foster City, CA, United StatesHQ checked Sep 14, 2026	1,001-5,000	3,058 contacts →
	Indirect evidence “Qualys, Inc.(NASDAQ: QLYS) is a leading provider of disruptive cloud-based security, compliance and IT solutions with more than subscription customers worldwide, including a…” Source: RevenueBase Database · checked Sep 14, 2026
23	Netskope	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 14, 2026	1,001-5,000	3,056 contacts →
	Indirect evidence “Netskope (NASDAQ: NTSK), a leader in modern security and networking for the cloud and AI era, addresses the needs of both security and networking teams by providing optimized…” Source: RevenueBase Database · checked Sep 14, 2026
24	Sentinelone	Strong evidence	Mountain View, CA, United StatesHQ checked Sep 14, 2026	1,001-5,000	3,052 contacts →
	Strong evidence “SentinelOne is the world's leading AI-powered cybersecurity platform.” Source: RevenueBase Database · checked Sep 14, 2026
25	Entrust	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 14, 2026	1,001-5,000	2,907 contacts →
	Indirect evidence “Entrust fights fraud and cyber threats with identity-centric security that protects people, devices, and data.” Source: RevenueBase Database · checked Sep 14, 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 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 companies.
Partial evidence: Its own public description names part of cybersecurity companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity 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 29,636 cybersecurity companies worldwide

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Cybersecurity companies worldwide at a glance

As of Sep 14, 2026

34.1%Verified-email coverage

26.3Average contacts per company

1-10Median size (employees)

3.0%Largest-city concentration · London

Sep 14, 2026Page data refreshed

Companies by employee count

1-10

15,377

11-50

10,049

51-200

2,922

201-500

712

501-1,000

246

1,001-5,000

204

5,001-10,000

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 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.
Coverage: 73 countries, largest first: the United States, India, the United Kingdom, France, Brazil, Canada, Australia, Germany, Spain, the Netherlands and 63 more. Country and city lists for cybersecurity companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “cybersecurity 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 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 companies, and records with no verified work email.
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, 265,852 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 14, 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 companies by location

207 lists · largest first

Every Cybersecurity companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 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 companies are there worldwide?

RevenueBase identified 29,636 cybersecurity companies worldwide 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?

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

Which country has the most cybersecurity companies?

The United States leads with 8,998 companies, followed by India (2,770) and the United Kingdom (2,121). Every cybersecurity companies list by country and city is linked on this page.

Which city has the most cybersecurity companies?

London leads with 882 headquartered companies, followed by Sao Paulo (359) and Paris (353).

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 265,852 verified decision-maker contacts tracked across these 29,636 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 14, 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.