Company lists · Data refreshed September 2026

Top 25 Artificial intelligence security startups worldwide

Name: Artificial intelligence security startups worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 27, 2026 4,851 companies tracked

RevenueBase identified 4,851 artificial intelligence security startups worldwide as of September 2026 and tracks 190,902 professional contacts across them, including 91,255 with verified work emails. The United States is the largest market and London the largest hub.

This list covers artificial intelligence security startups 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 27, 2026. Country and city lists for artificial intelligence security startups 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 27, 2026 86% judged on-target in blind review

4,851Companies

190,902Contacts tracked

91,255Verified emails

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The 25 largest artificial intelligence security startups worldwide

Ranked by team size

Top 25 of 4,851 artificial intelligence security startups worldwide, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to artificial intelligence security startups: 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	Palo Alto Networks	Indirect evidence	Santa Clara, CA, United StatesHQ checked Sep 27, 2026	10001+	18,431 contacts →
	Indirect 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 27, 2026
2	Fortinet	Indirect evidence	Sunnyvale, CA, United StatesHQ checked Sep 27, 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 27, 2026
3	Crowdstrike	Partial evidence	Remote, United StatesHQ checked Sep 27, 2026	5,001-10,000	10,118 contacts →
	Partial 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 27, 2026
4	Check Point Software	Indirect evidence	Redwood City, CA, United StatesHQ checked Sep 27, 2026	5,001-10,000	7,668 contacts →
	Indirect evidence “Check Point Software Technologies Ltd.” Source: RevenueBase Database · checked Sep 27, 2026
5	Trend Micro	Indirect evidence	Yoyogi, JapanHQ checked Sep 27, 2026	5,001-10,000	4,942 contacts →
	Indirect evidence “We’re a global cybersecurity leader, helping to make the world safe for exchanging digital information.” Source: RevenueBase Database · checked Sep 27, 2026
6	Sophos	Indirect evidence	Abingdon, United KingdomHQ checked Sep 27, 2026	5,001-10,000	4,925 contacts →
	Indirect evidence “Sophos is a cybersecurity leader defending organizations globally with an AI-driven platform and expert-led services.” Source: RevenueBase Database · checked Sep 27, 2026
7	Proofpoint	Indirect evidence	Sunnyvale, CA, United StatesHQ checked Sep 27, 2026	1,001-5,000	4,722 contacts →
	Indirect evidence “Intent-based protection for every human and every AI agent, across all data.” Source: RevenueBase Database · checked Sep 27, 2026
8	Rubrik	Partial evidence	Palo Alto, CA, United StatesHQ checked Sep 27, 2026	1,001-5,000	4,448 contacts →
	Partial 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 27, 2026
9	Commvault	Indirect evidence	Tinton Falls, NJ, United StatesHQ checked Sep 27, 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 27, 2026
10	Bugcrowd	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 27, 2026	n/a	3,649 contacts →
	Partial 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 27, 2026
11	Trellix	Strong evidence	Plano, TX, United StatesHQ checked Sep 27, 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 27, 2026
12	Netskope	Partial evidence	Santa Clara, CA, United StatesHQ checked Sep 27, 2026	1,001-5,000	3,056 contacts →
	Partial 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 27, 2026
13	Sentinelone	Indirect evidence	Mountain View, CA, United StatesHQ checked Sep 27, 2026	1,001-5,000	3,052 contacts →
	Indirect evidence “SentinelOne is the world's leading AI-powered cybersecurity platform.” Source: RevenueBase Database · checked Sep 27, 2026
14	Rapid7	Indirect evidence	Boston, MA, United StatesHQ checked Sep 27, 2026	1,001-5,000	2,822 contacts →
	Indirect evidence “Rapid7, Inc.(NASDAQ: RPD) is a global leader in AI-powered managed cybersecurity operations, trusted to advance organizations’ cyber resilience.” Source: RevenueBase Database · checked Sep 27, 2026
15	Varonis	Partial evidence	Miami, FL, United StatesHQ checked Sep 27, 2026	1,001-5,000	2,715 contacts →
	Partial evidence “Varonis unifies AI-native data security, AI security and governance, and behavior-based threat detection.” Source: RevenueBase Database · checked Sep 27, 2026
16	Ivanti	Partial evidence	South Jordan, UT, United StatesHQ checked Sep 27, 2026	1,001-5,000	2,691 contacts →
	Partial evidence “Ivanti is a global enterprise IT and security software company that provides the trusted data authority for AI-driven, autonomous endpoint management.” Source: RevenueBase Database · checked Sep 27, 2026
17	Knowbe4	Partial evidence	Clearwater, FL, United StatesHQ checked Sep 27, 2026	1,001-5,000	2,367 contacts →
	Partial evidence “KnowBe4 empowers the modern workforce to make smarter security decisions every day.” Source: RevenueBase Database · checked Sep 27, 2026
18	Darktrace	Indirect evidence	Cambridge, United KingdomHQ checked Sep 27, 2026	1,001-5,000	2,355 contacts →
	Indirect evidence “Darktrace is a global leader in AI cybersecurity, providing the essential cybersecurity platform to secure organizations today and for an ever-changing future.” Source: RevenueBase Database · checked Sep 27, 2026
19	Mimecast	Indirect evidence	London, United KingdomHQ checked Sep 27, 2026	1,001-5,000	2,304 contacts →
	Indirect evidence “organizations.” Source: RevenueBase Database · checked Sep 27, 2026
20	Bitdefender	Indirect evidence	Bucuresti, RomaniaHQ checked Sep 27, 2026	1,001-5,000	2,172 contacts →
	Indirect evidence “Bitdefender is a cybersecurity leader delivering best-in-class threat prevention, detection, and response solutions worldwide.” Source: RevenueBase Database · checked Sep 27, 2026
21	Barracuda	Indirect evidence	Campbell, CA, United StatesHQ checked Sep 27, 2026	1,001-5,000	2,157 contacts →
	Indirect evidence “Barracuda is a leading global cybersecurity company providing complete protection against complex threats for all size business.” Source: RevenueBase Database · checked Sep 27, 2026
22	Inspira Enterprise	Indirect evidence	Mumbai, IndiaHQ checked Sep 27, 2026	1,001-5,000	1,773 contacts →
	Indirect evidence “Inspira Enterprise is a global Cybersecurity & Data Analytics & AI services provider with a presence in North America, ASEAN, Middle East, India, and Africa regions.” Source: RevenueBase Database · checked Sep 27, 2026
23	Fortra	Indirect evidence	Eden Prairie, MN, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,648 contacts →
	Indirect evidence “Fortra delivers AI-amplified cybersecurity solutions that help organizations use and protect data with confidence.” Source: RevenueBase Database · checked Sep 27, 2026
24	Reliaquest	Partial evidence	Tampa, FL, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,285 contacts →
	Partial evidence “ReliaQuest exists to Make Security Possible.” Source: RevenueBase Database · checked Sep 27, 2026
25	CYERA	Partial evidence	New York, NY, United StatesHQ checked Sep 27, 2026	1,001-5,000	1,130 contacts →
	Partial evidence “Cyera is the industry-leading AI Security Platform.” Source: RevenueBase Database · checked Sep 27, 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: artificial intelligence security startups. 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 artificial intelligence security startups.
Partial evidence: Its own public description names part of artificial intelligence security startups, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name artificial intelligence security startups. 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 4,851 artificial intelligence security startups worldwide

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Artificial intelligence security startups worldwide at a glance

As of Sep 27, 2026

47.8%Verified-email coverage

39.4Average contacts per company

11-50Median size (employees)

2.7%Largest-city concentration · London

Sep 27, 2026Page data refreshed

Companies by employee count

1-10

2,377

11-50

1,710

51-200

498

201-500

125

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 artificial intelligence security startups, 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: Every country. Country and city lists for artificial intelligence security startups are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “artificial intelligence security startups”. 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 artificial intelligence security startups), 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 artificial intelligence security startups, 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, 91,255 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.

Artificial intelligence security startups by location

29 lists · largest first

Every Artificial intelligence security startups 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 artificial intelligence security startups, 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 artificial intelligence security startups are there worldwide?

RevenueBase identified 4,851 artificial intelligence security startups 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?

Palo Alto Networks, headquartered in Santa Clara, tops this list with the largest team on record.

Which country has the most artificial intelligence security startups?

The United States leads with 1,264 companies, followed by India (527) and the United Kingdom (232). Every artificial intelligence security startups list by country and city is linked on this page.

Which city has the most artificial intelligence security startups?

London leads with 132 headquartered companies, followed by San Francisco (93) and New York (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 91,255 verified decision-maker contacts tracked across these 4,851 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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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.