Company lists · Data refreshed September 2026
Top 25 Security data companies worldwide
RevenueBase identified 20,947 security data companies worldwide as of September 2026 and tracks 390,833 professional contacts across them, including 128,914 with verified work emails. The United States is the largest market and London the largest hub.
This list covers security data 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 21, 2026. Country and city lists for security data 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 security data 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 21, 2026Thanks. The Data Team will review it. | |||||
| 2 | 14,289 contacts → | ||||
Partial 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 21, 2026Thanks. The Data Team will review it. | |||||
| 3 | 12,771 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 4 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 6 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 7 | 3,673 contacts → | ||||
Indirect evidence “Orange Cyberdefense is the expert cybersecurity business unit of the Orange Group.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 8 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 3,592 contacts → | ||||
Indirect evidence “U.S.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 3,387 contacts → | ||||
Partial 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 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 3,058 contacts → | ||||
Partial 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 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 3,052 contacts → | ||||
Indirect evidence “SentinelOne is the world's leading AI-powered cybersecurity platform.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 1,773 contacts → | ||||
Partial 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 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 1,648 contacts → | ||||
Partial evidence “Fortra delivers AI-amplified cybersecurity solutions that help organizations use and protect data with confidence.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 21 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 1,232 contacts → | ||||
Partial evidence “GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1,217 contacts → | ||||
Indirect evidence “On Dec.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1,181 contacts → | ||||
Indirect evidence “As AI-driven vulnerability and exploitation accelerate attack velocity to machine speed, Forescout is a foundational cyber defense layer that allows organizations to segment and…” Source: RevenueBase Database · checked Sep 21, 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: security data 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 security data companies.
- Partial evidence
- Its own public description names part of security data companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name security data 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 20,947 security data companies worldwide
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Security data companies worldwide at a glance
As of Sep 21, 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 security data 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 security data companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “security data 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 security data 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 security data 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, 128,914 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 21, 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.
Security data companies by location
117 lists · largest firstEvery Security data companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Security data companies based in the United States4,877
- Security data companies based in India1,583
- Security data companies based in the United Kingdom1,226
- Security data companies based in Brazil900
- Security data companies based in France689
- Security data companies based in Canada655
- Security data companies based in Australia594
- Security data companies based in Germany570
- Security data companies based in Spain408
- Security data companies based in the Netherlands398
- Security data companies based in Italy354
- Security data companies based in Mexico290
- Security data companies based in the United Arab Emirates288
- Security data companies based in South Africa258
- Security data companies based in Türkiye207
- Security data companies based in Colombia189
- Security data companies based in Israel188
- Security data companies based in Belgium178
- Security data companies based in Argentina177
- Security data companies based in Pakistan162
- Security data companies based in Switzerland160
- Security data companies based in Chile157
- Security data companies based in Sweden147
- Security data companies based in Poland145
- Security data companies based in Saudi Arabia133
- Security data companies based in Singapore129
- Security data companies based in Indonesia112
- Security data companies based in Nigeria112
- Security data companies based in Romania86
- Security data companies based in Malaysia84
- Security data companies based in Ireland81
- Security data companies based in New Zealand81
- Security data companies based in Peru80
- Security data companies based in Kenya79
- Security data companies based in Denmark74
- Security data companies based in Japan73
- Security data companies based in Austria72
- Security data companies based in Ecuador71
- Security data companies based in Portugal71
- Security data companies based in Egypt63
- Security data companies based in Greece62
- Security data companies based in Morocco56
- Security data companies based in the Philippines56
- Security data companies based in Hungary55
- Security data companies based in Ukraine48
- Security data companies based in Finland42
- Security data companies based in Thailand41
- Security data companies based in Sri Lanka37
- Security data companies based in Bulgaria35
- Security data companies based in Norway35
- Security data companies based in Slovakia33
- Security data companies based in Qatar32
- Security data companies based in Estonia28
- Security data companies based in Cyprus27
- Security data companies based in Hong Kong25
- Security data companies based in the Dominican Republic25
Cities
- Security data companies based in London, United Kingdom434
- Security data companies based in Sao Paulo, Brazil257
- Security data companies based in Toronto, Canada142
- Security data companies based in New York, United States141
- Security data companies based in Pune, India126
- Security data companies based in Hyderabad, India122
- Security data companies based in Sydney, Australia117
- Security data companies based in Bangalore, India107
- Security data companies based in Melbourne, Australia105
- Security data companies based in Mumbai, India103
- Security data companies based in New Delhi, India97
- Security data companies based in Houston, United States88
- Security data companies based in Austin, United States86
- Security data companies based in Chennai, India86
- Security data companies based in San Francisco, United States86
- Security data companies based in Miami, United States83
- Security data companies based in Noida, India79
- Security data companies based in Atlanta, United States76
- Security data companies based in Bengaluru, India75
- Security data companies based in Dallas, United States75
- Security data companies based in Chicago, United States73
- Security data companies based in Ahmedabad, India70
- Security data companies based in Montreal, Canada65
- Security data companies based in Rio De Janeiro, Brazil63
- Security data companies based in Washington, United States63
- Security data companies based in Johannesburg, South Africa62
- Security data companies based in Tampa, United States59
- Security data companies based in Los Angeles, United States54
- Security data companies based in Karachi, Pakistan52
- Security data companies based in Calgary, Canada51
- Security data companies based in Ottawa, Canada49
- Security data companies based in Boston, United States47
- Security data companies based in San Diego, United States45
- Security data companies based in Columbia, United States43
- Security data companies based in Manchester, United Kingdom43
- Security data companies based in Charlotte, United States41
- Security data companies based in Belo Horizonte, Brazil40
- Security data companies based in Denver, United States40
- Security data companies based in Las Vegas, United States39
- Security data companies based in San Jose, United States36
- Security data companies based in Brisbane, Australia35
- Security data companies based in Gurgaon, India35
- Security data companies based in Phoenix, United States35
- Security data companies based in Curitiba, Brazil34
- Security data companies based in Arlington, United States33
- Security data companies based in Cape Town, South Africa32
- Security data companies based in Mississauga, Canada32
- Security data companies based in Wilmington, United States32
- Security data companies based in Vancouver, Canada31
- Security data companies based in Reston, United States30
- Security data companies based in San Antonio, United States30
- Security data companies based in Baltimore, United States27
- Security data companies based in Brasilia, Brazil27
- Security data companies based in Seattle, United States27
- Security data companies based in Alexandria, United States26
- Security data companies based in Gurugram, India26
- Security data companies based in Birmingham, United Kingdom25
- Security data companies based in Canberra, Australia25
- Security data companies based in Dover, United States25
- Security data companies based in Pretoria, South Africa25
- Security data companies based in Scottsdale, United States25
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 security data 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 security data companies are there worldwide?
RevenueBase identified 20,947 security data 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 security data companies?
The United States leads with 4,877 companies, followed by India (1,583) and the United Kingdom (1,226). Every security data companies list by country and city is linked on this page.
Which city has the most security data companies?
London leads with 442 headquartered companies, followed by Sao Paulo (257) and Dubai (175).
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 128,914 verified decision-maker contacts tracked across these 20,947 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 21, 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.