Company lists · Data refreshed September 2026
Top 25 Security IT companies worldwide
RevenueBase identified 26,447 security IT companies worldwide as of September 2026 and tracks 425,545 professional contacts across them, including 123,160 with verified work emails. The United States is the largest market and London the largest hub.
This list covers security IT 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 IT 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 IT 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 → | ||||
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 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 | 11,169 contacts → | ||||
Partial 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 21, 2026Thanks. The Data Team will review it. | |||||
| 5 | 6,335 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 21, 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 21, 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 21, 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 21, 2026Thanks. The Data Team will review it. | |||||
| 9 | 2,523 contacts → | ||||
Partial evidence “NIL is a globally recognized provider of advanced data center, network, cloud, cyber security solutions as well as services for business and industry environments, state…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 10 | 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. | |||||
| 11 | 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. | |||||
| 12 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 13 | 1,754 contacts → | ||||
Indirect evidence “Com 35 anos de experiência no mercado, o grupo Albatroz presta serviços de alta complexidade em segurança patrimonial, segurança eletrônica, combate a incêndio e serviços de…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 14 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 15 | 1,636 contacts → | ||||
Partial evidence “Forcepoint simplifies security for global businesses and governments.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 16 | 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. | |||||
| 17 | 1,328 contacts → | ||||
Indirect evidence “Somos una empresa de seguridad integral, incorporando la tecnología y la innovación como herramientas para asegurar la sostenibilidad de las organizaciones, con un equipo humano…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 18 | 1,297 contacts → | ||||
Partial 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 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 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 21, 2026Thanks. The Data Team will review it. | |||||
| 20 | 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. | |||||
| 21 | 1,225 contacts → | ||||
Partial evidence “Securitas is the global knowledge leader in Security & loss prevention, with revenues of over $12bn, employing more than people in 44 markets.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 22 | 1,217 contacts → | ||||
Indirect evidence “On Dec.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 23 | 1,068 contacts → | ||||
Partial evidence “Solid Security to doświadczenie, wiedza oraz profesjonalizm działań na rynku ochrony osób i mienia.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1,041 contacts → | ||||
Indirect evidence “A lo largo de 30 años, hemos incursionado y evolucionado en distintas áreas atendiendo en el continente americano a clientes privados, corporativos y sector gobierno.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1,026 contacts → | ||||
Indirect evidence “Irdeto, a CANAL+ company, is the world leader in digital platform cybersecurity, empowering businesses to innovate for a secure, connected future.” 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 IT 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 IT companies.
- Partial evidence
- Its own public description names part of security IT companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name security IT 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 26,447 security IT companies worldwide
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Security IT 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 IT 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 IT companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “security IT 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 IT 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 IT 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, 123,160 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 IT companies by location
145 lists · largest firstEvery Security IT companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Security IT companies based in the United States6,059
- Security IT companies based in India2,356
- Security IT companies based in the United Kingdom1,455
- Security IT companies based in Brazil1,024
- Security IT companies based in Canada828
- Security IT companies based in France822
- Security IT companies based in Australia770
- Security IT companies based in Germany630
- Security IT companies based in Spain450
- Security IT companies based in the United Arab Emirates434
- Security IT companies based in the Netherlands425
- Security IT companies based in Italy405
- Security IT companies based in Mexico360
- Security IT companies based in Türkiye308
- Security IT companies based in South Africa306
- Security IT companies based in Pakistan235
- Security IT companies based in Colombia229
- Security IT companies based in Israel215
- Security IT companies based in Chile209
- Security IT companies based in Saudi Arabia204
- Security IT companies based in Switzerland201
- Security IT companies based in Belgium194
- Security IT companies based in Poland193
- Security IT companies based in Argentina187
- Security IT companies based in Sweden172
- Security IT companies based in Nigeria162
- Security IT companies based in Indonesia155
- Security IT companies based in Singapore154
- Security IT companies based in Kenya120
- Security IT companies based in Malaysia113
- Security IT companies based in Peru112
- Security IT companies based in Romania108
- Security IT companies based in Bangladesh97
- Security IT companies based in Austria93
- Security IT companies based in New Zealand92
- Security IT companies based in Egypt91
- Security IT companies based in Ecuador88
- Security IT companies based in Ireland85
- Security IT companies based in Portugal85
- Security IT companies based in Morocco80
- Security IT companies based in Greece76
- Security IT companies based in the Philippines76
- Security IT companies based in Denmark72
- Security IT companies based in Japan66
- Security IT companies based in Finland63
- Security IT companies based in Hungary62
- Security IT companies based in Qatar53
- Security IT companies based in Thailand53
- Security IT companies based in Sri Lanka51
- Security IT companies based in Ukraine48
- Security IT companies based in Ghana47
- Security IT companies based in Slovakia46
- Security IT companies based in Tunisia44
- Security IT companies based in Bulgaria43
- Security IT companies based in Jordan40
- Security IT companies based in Norway39
- Security IT companies based in the Dominican Republic39
- Security IT companies based in Hong Kong38
- Security IT companies based in Nepal38
- Security IT companies based in Costa Rica36
- Security IT companies based in South Korea35
- Security IT companies based in Estonia34
- Security IT companies based in Luxembourg34
- Security IT companies based in Bahrain29
- Security IT companies based in Cyprus29
- Security IT companies based in Uruguay29
- Security IT companies based in Taiwan28
- Security IT companies based in Zimbabwe28
- Security IT companies based in Oman25
- Security IT companies based in Panama25
Cities
- Security IT companies based in London, United Kingdom519
- Security IT companies based in Sao Paulo, Brazil283
- Security IT companies based in Toronto, Canada177
- Security IT companies based in Pune, India169
- Security IT companies based in Hyderabad, India167
- Security IT companies based in New York, United States166
- Security IT companies based in Mumbai, India152
- Security IT companies based in New Delhi, India147
- Security IT companies based in Bangalore, India146
- Security IT companies based in Sydney, Australia144
- Security IT companies based in Melbourne, Australia140
- Security IT companies based in Houston, United States117
- Security IT companies based in Chennai, India114
- Security IT companies based in Noida, India107
- Security IT companies based in Ahmedabad, India106
- Security IT companies based in Bengaluru, India103
- Security IT companies based in Miami, United States99
- Security IT companies based in Austin, United States97
- Security IT companies based in Chicago, United States97
- Security IT companies based in Washington, United States96
- Security IT companies based in Atlanta, United States92
- Security IT companies based in Dallas, United States92
- Security IT companies based in Montreal, Canada86
- Security IT companies based in Johannesburg, South Africa79
- Security IT companies based in Tampa, United States77
- Security IT companies based in Rio De Janeiro, Brazil74
- Security IT companies based in Karachi, Pakistan73
- Security IT companies based in Delhi, India72
- Security IT companies based in San Francisco, United States72
- Security IT companies based in Calgary, Canada70
- Security IT companies based in Ottawa, Canada67
- Security IT companies based in Manchester, United Kingdom59
- Security IT companies based in Brisbane, Australia58
- Security IT companies based in San Diego, United States56
- Security IT companies based in Gurgaon, India55
- Security IT companies based in Los Angeles, United States55
- Security IT companies based in Arlington, United States54
- Security IT companies based in Denver, United States51
- Security IT companies based in Vancouver, Canada48
- Security IT companies based in Boston, United States47
- Security IT companies based in Columbia, United States47
- Security IT companies based in Charlotte, United States45
- Security IT companies based in Orlando, United States44
- Security IT companies based in Las Vegas, United States43
- Security IT companies based in San Antonio, United States43
- Security IT companies based in Phoenix, United States41
- Security IT companies based in Belo Horizonte, Brazil39
- Security IT companies based in Brasilia, Brazil39
- Security IT companies based in Canberra, Australia37
- Security IT companies based in Mclean, United States37
- Security IT companies based in Reston, United States37
- Security IT companies based in Alexandria, United States36
- Security IT companies based in Baltimore, United States36
- Security IT companies based in Gurugram, India35
- Security IT companies based in Mississauga, Canada35
- Security IT companies based in Cape Town, South Africa34
- Security IT companies based in Huntsville, United States33
- Security IT companies based in Wilmington, United States33
- Security IT companies based in Seattle, United States32
- Security IT companies based in Fairfax, United States31
- Security IT companies based in San Jose, United States31
- Security IT companies based in Birmingham, United Kingdom30
- Security IT companies based in Curitiba, Brazil30
- Security IT companies based in Raleigh, United States30
- Security IT companies based in Barueri, Brazil28
- Security IT companies based in Fort Lauderdale, United States28
- Security IT companies based in Scottsdale, United States27
- Security IT companies based in Edmonton, Canada26
- Security IT companies based in Indianapolis, United States26
- Security IT companies based in Portland, United States26
- Security IT companies based in Ashburn, United States25
- Security IT companies based in Colorado Springs, United States25
- Security IT companies based in Dover, United States25
- Security IT companies based in Pittsburgh, United States25
- Security IT companies based in Plano, 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 IT 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 IT companies are there worldwide?
RevenueBase identified 26,447 security IT 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 IT companies?
The United States leads with 6,059 companies, followed by India (2,356) and the United Kingdom (1,455). Every security IT companies list by country and city is linked on this page.
Which city has the most security IT companies?
London leads with 527 headquartered companies, followed by Sao Paulo (283) and Dubai (255).
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 123,160 verified decision-maker contacts tracked across these 26,447 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.