Company lists · Data refreshed September 2026
Top 25 Threat detection and response companies worldwide
RevenueBase identified 15,096 threat detection and response companies worldwide as of September 2026 and tracks 328,458 professional contacts across them, including 124,379 with verified work emails. The United States is the largest market and London the largest hub.
This list covers threat detection and response 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 22, 2026. Country and city lists for threat detection and response 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.
The 25 largest threat detection and response companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 22, 2026Thanks. The Data Team will review it. | |||||
| 2 | 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 22, 2026Thanks. The Data Team will review it. | |||||
| 3 | 12,771 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 22, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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 22, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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 22, 2026Thanks. The Data Team will review it. | |||||
| 7 | 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 22, 2026Thanks. The Data Team will review it. | |||||
| 8 | 3,673 contacts → | ||||
Indirect evidence “Orange Cyberdefense is the expert cybersecurity business unit of the Orange Group.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 9 | 3,447 contacts → | ||||
Indirect 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 22, 2026Thanks. The Data Team will review it. | |||||
| 10 | 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 22, 2026Thanks. The Data Team will review it. | |||||
| 11 | 3,052 contacts → | ||||
Indirect evidence “SentinelOne is the world's leading AI-powered cybersecurity platform.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 12 | 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 22, 2026Thanks. The Data Team will review it. | |||||
| 13 | 2,715 contacts → | ||||
Strong evidence “Varonis unifies AI-native data security, AI security and governance, and behavior-based threat detection.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 14 | 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 22, 2026Thanks. The Data Team will review it. | |||||
| 15 | 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 22, 2026Thanks. The Data Team will review it. | |||||
| 16 | 2,172 contacts → | ||||
Strong evidence “Bitdefender is a cybersecurity leader delivering best-in-class threat prevention, detection, and response solutions worldwide.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 17 | 2,157 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 22, 2026Thanks. The Data Team will review it. | |||||
| 18 | 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 22, 2026Thanks. The Data Team will review it. | |||||
| 19 | 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 22, 2026Thanks. The Data Team will review it. | |||||
| 20 | 1,378 contacts → | ||||
Indirect evidence “We are established for enriching local content in designing, developing, and operating secure digital computing environments through Saudi talents, by fulfilling our role as a…” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 21 | 1,297 contacts → | ||||
Indirect evidence “Sangfor Technologies is a global leader in cybersecurity, cloud computing, and IT infrastructure, providing fully integrated and AI-driven solutions.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 22 | 1,285 contacts → | ||||
Indirect evidence “ReliaQuest exists to Make Security Possible.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 23 | 1,252 contacts → | ||||
Indirect 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 22, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1,232 contacts → | ||||
Indirect evidence “GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1,217 contacts → | ||||
Indirect evidence “On Dec.” Source: RevenueBase Database · checked Sep 22, 2026Thanks. The Data Team will review it. | |||||
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: threat detection and response 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 threat detection and response companies.
- Partial evidence
- Its own public description names part of threat detection and response companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name threat detection and response 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 15,096 threat detection and response companies worldwide
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Threat detection and response companies worldwide at a glance
As of Sep 22, 2026Companies by employee count
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 threat detection and response 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
- Every country. Country and city lists for threat detection and response companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “threat detection and response 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 threat detection and response 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 threat detection and response 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, 124,379 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 22, 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.
Threat detection and response companies by location
92 lists · largest firstEvery Threat detection and response companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Threat detection and response companies based in the United States3,812
- Threat detection and response companies based in India1,338
- Threat detection and response companies based in the United Kingdom852
- Threat detection and response companies based in Canada501
- Threat detection and response companies based in Australia467
- Threat detection and response companies based in France440
- Threat detection and response companies based in Brazil407
- Threat detection and response companies based in Germany293
- Threat detection and response companies based in the United Arab Emirates275
- Threat detection and response companies based in Spain266
- Threat detection and response companies based in the Netherlands239
- Threat detection and response companies based in Italy202
- Threat detection and response companies based in Israel194
- Threat detection and response companies based in Mexico178
- Threat detection and response companies based in Türkiye178
- Threat detection and response companies based in South Africa159
- Threat detection and response companies based in Pakistan120
- Threat detection and response companies based in Saudi Arabia120
- Threat detection and response companies based in Switzerland120
- Threat detection and response companies based in Singapore114
- Threat detection and response companies based in Belgium109
- Threat detection and response companies based in Colombia108
- Threat detection and response companies based in Chile102
- Threat detection and response companies based in Poland96
- Threat detection and response companies based in Indonesia88
- Threat detection and response companies based in Nigeria83
- Threat detection and response companies based in Sweden80
- Threat detection and response companies based in Argentina77
- Threat detection and response companies based in Austria63
- Threat detection and response companies based in Malaysia61
- Threat detection and response companies based in Romania54
- Threat detection and response companies based in Ireland53
- Threat detection and response companies based in New Zealand53
- Threat detection and response companies based in Kenya52
- Threat detection and response companies based in Japan51
- Threat detection and response companies based in Denmark50
- Threat detection and response companies based in Peru48
- Threat detection and response companies based in Egypt44
- Threat detection and response companies based in Finland44
- Threat detection and response companies based in Greece38
- Threat detection and response companies based in Portugal37
- Threat detection and response companies based in Thailand37
- Threat detection and response companies based in Ukraine37
- Threat detection and response companies based in Sri Lanka34
- Threat detection and response companies based in Bulgaria32
- Threat detection and response companies based in Estonia32
- Threat detection and response companies based in Hungary32
- Threat detection and response companies based in Slovakia28
- Threat detection and response companies based in South Korea26
- Threat detection and response companies based in the Dominican Republic25
Cities
- Threat detection and response companies based in New York, United States122
- Threat detection and response companies based in Toronto, Canada111
- Threat detection and response companies based in Hyderabad, India104
- Threat detection and response companies based in Pune, India103
- Threat detection and response companies based in Melbourne, Australia97
- Threat detection and response companies based in Sydney, Australia97
- Threat detection and response companies based in Mumbai, India87
- Threat detection and response companies based in Bangalore, India80
- Threat detection and response companies based in New Delhi, India78
- Threat detection and response companies based in Chennai, India75
- Threat detection and response companies based in Austin, United States74
- Threat detection and response companies based in Washington, United States72
- Threat detection and response companies based in Miami, United States71
- Threat detection and response companies based in Bengaluru, India66
- Threat detection and response companies based in Montreal, Canada65
- Threat detection and response companies based in San Francisco, United States65
- Threat detection and response companies based in Dallas, United States64
- Threat detection and response companies based in Houston, United States63
- Threat detection and response companies based in Atlanta, United States62
- Threat detection and response companies based in Chicago, United States62
- Threat detection and response companies based in Noida, India61
- Threat detection and response companies based in Ahmedabad, India58
- Threat detection and response companies based in Tampa, United States45
- Threat detection and response companies based in Boston, United States41
- Threat detection and response companies based in Calgary, Canada40
- Threat detection and response companies based in San Diego, United States40
- Threat detection and response companies based in Columbia, United States39
- Threat detection and response companies based in Ottawa, Canada38
- Threat detection and response companies based in Brisbane, Australia37
- Threat detection and response companies based in Las Vegas, United States37
- Threat detection and response companies based in Arlington, United States36
- Threat detection and response companies based in Gurgaon, India35
- Threat detection and response companies based in Los Angeles, United States34
- Threat detection and response companies based in Reston, United States34
- Threat detection and response companies based in Charlotte, United States31
- Threat detection and response companies based in Denver, United States31
- Threat detection and response companies based in San Jose, United States30
- Threat detection and response companies based in Baltimore, United States29
- Threat detection and response companies based in Mclean, United States28
- Threat detection and response companies based in Vancouver, Canada27
- Threat detection and response companies based in Phoenix, United States26
- Threat detection and response companies based in Plano, United States26
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 threat detection and response 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 threat detection and response companies are there worldwide?
RevenueBase identified 15,096 threat detection and response 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?
Palo Alto Networks, headquartered in Santa Clara, tops this list with the largest team on record.
Which country has the most threat detection and response companies?
The United States leads with 3,812 companies, followed by India (1,338) and the United Kingdom (852). Every threat detection and response companies list by country and city is linked on this page.
Which city has the most threat detection and response companies?
London leads with 354 headquartered companies, followed by Dubai (176) and Sao Paulo (152).
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 124,379 verified decision-maker contacts tracked across these 15,096 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 22, 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.