Company lists · Data refreshed September 2026

Top 25 Adversarial intelligence firms worldwide

Name: Adversarial intelligence firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 24,068 companies tracked

RevenueBase identified 24,068 adversarial intelligence firms worldwide as of September 2026 and tracks 439,509 professional contacts across them, including 157,004 with verified work emails. The United States is the largest market and London the largest hub.

This list covers adversarial intelligence firms 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 19, 2026. Country and city lists for adversarial intelligence firms 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 19, 2026 86% judged on-target in blind review

24,068Companies

439,509Contacts tracked

157,004Verified emails

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The 25 largest adversarial intelligence firms worldwide

Ranked by team size

Top 25 of 24,068 adversarial intelligence firms worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to adversarial intelligence firms: 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 19, 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 19, 2026
2	Fortinet	Indirect evidence	Sunnyvale, CA, United StatesHQ checked Sep 19, 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 19, 2026
3	Private Sector	Indirect evidence	United StatesHQ checked Sep 19, 2026	n/a	12,771 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
4	Symantec	Indirect evidence	San Jose, CA, United StatesHQ checked Sep 19, 2026	10001+	11,169 contacts →
	Indirect 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 19, 2026
5	Crowdstrike	Indirect evidence	Remote, United StatesHQ checked Sep 19, 2026	5,001-10,000	10,118 contacts →
	Indirect 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 19, 2026
6	Trend Micro	Indirect evidence	Yoyogi, JapanHQ checked Sep 19, 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 19, 2026
7	Sophos	Indirect evidence	Abingdon, United KingdomHQ checked Sep 19, 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 19, 2026
8	Orange Cyberdefense	Indirect evidence	Nanterre, FranceHQ checked Sep 19, 2026	1,001-5,000	3,673 contacts →
	Indirect evidence “Orange Cyberdefense is the expert cybersecurity business unit of the Orange Group.” Source: RevenueBase Database · checked Sep 19, 2026
9	Bugcrowd	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 19, 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 19, 2026
10	Trellix	Partial evidence	Plano, TX, United StatesHQ checked Sep 19, 2026	1,001-5,000	3,447 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 19, 2026
11	Sicuritalia S.P.A	Indirect evidence	Milano, ItalyHQ checked Sep 19, 2026	10001+	3,387 contacts →
	Indirect evidence “Il Gruppo Sicuritalia, con oltre 18.500 dipendenti, è la più grande azienda italiana ed il secondo player privato europeo in ambito Security.” Source: RevenueBase Database · checked Sep 19, 2026
12	Arctic Wolf	Indirect evidence	Eden Prairie, MN, United StatesHQ checked Sep 19, 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 19, 2026
13	Sentinelone	Indirect evidence	Mountain View, CA, United StatesHQ checked Sep 19, 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 19, 2026
14	Sailpoint	Indirect evidence	Austin, TX, United StatesHQ checked Sep 19, 2026	1,001-5,000	2,886 contacts →
	Indirect evidence “SailPoint equips the modern enterprise to seamlessly manage and secure access to applications and data through the lens of identity – at speed and scale.” Source: RevenueBase Database · checked Sep 19, 2026
15	Rapid7	Indirect evidence	Boston, MA, United StatesHQ checked Sep 19, 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 19, 2026
16	Darktrace	Indirect evidence	Cambridge, United KingdomHQ checked Sep 19, 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 19, 2026
17	Mimecast	Indirect evidence	London, United KingdomHQ checked Sep 19, 2026	1,001-5,000	2,304 contacts →
	Indirect evidence “organizations.” Source: RevenueBase Database · checked Sep 19, 2026
18	OPTIV	Indirect evidence	Leawood, KS, United StatesHQ checked Sep 19, 2026	1,001-5,000	2,222 contacts →
	Indirect evidence “Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.” Source: RevenueBase Database · checked Sep 19, 2026
19	Bitdefender	Indirect evidence	Bucuresti, RomaniaHQ checked Sep 19, 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 19, 2026
20	Barracuda	Indirect evidence	Campbell, CA, United StatesHQ checked Sep 19, 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 19, 2026
21	Inspira Enterprise	Indirect evidence	Mumbai, IndiaHQ checked Sep 19, 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 19, 2026
22	Beyondtrust	Indirect evidence	Johns Creek, GA, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,669 contacts →
	Indirect evidence “BeyondTrust is the global cybersecurity leader protecting Paths to Privilege™.” Source: RevenueBase Database · checked Sep 19, 2026
23	Fortra	Indirect evidence	Eden Prairie, MN, United StatesHQ checked Sep 19, 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 19, 2026
24	Forcepoint	Indirect evidence	Austin, TX, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,636 contacts →
	Indirect evidence “Forcepoint simplifies security for global businesses and governments.” Source: RevenueBase Database · checked Sep 19, 2026
25	Quick Heal	Indirect evidence	Pune, IndiaHQ checked Sep 19, 2026	1,001-5,000	1,510 contacts →
	Indirect evidence “Quick Heal Technologies Limited is one of the leading providers of IT Security and Data Protection Solutions with a strong footprint in India and an evolving global presence.” Source: RevenueBase Database · checked Sep 19, 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: adversarial intelligence firms. 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 adversarial intelligence firms.
Partial evidence: Its own public description names part of adversarial intelligence firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name adversarial intelligence firms. 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 24,068 adversarial intelligence firms worldwide

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Adversarial intelligence firms worldwide at a glance

As of Sep 19, 2026

35.7%Verified-email coverage

18.3Average contacts per company

1-10Median size (employees)

2.7%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

13,356

11-50

7,849

51-200

2,037

201-500

463

501-1,000

139

1,001-5,000

134

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 adversarial intelligence firms, 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 adversarial intelligence firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “adversarial intelligence firms”. 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 adversarial intelligence firms), 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 adversarial intelligence firms, 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, 157,004 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 19, 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.

Adversarial intelligence firms by location

137 lists · largest first

Every Adversarial intelligence firms 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 adversarial intelligence firms, 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 adversarial intelligence firms are there worldwide?

RevenueBase identified 24,068 adversarial intelligence firms 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 adversarial intelligence firms?

The United States leads with 5,980 companies, followed by India (1,918) and the United Kingdom (1,516). Every adversarial intelligence firms list by country and city is linked on this page.

Which city has the most adversarial intelligence firms?

London leads with 646 headquartered companies, followed by Paris (252) and Sao Paulo (248).

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 157,004 verified decision-maker contacts tracked across these 24,068 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 19, 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.