Company lists · Data refreshed September 2026
Top 25 Computer network security companies worldwide
RevenueBase identified 22,458 computer network security companies worldwide as of September 2026 and tracks 381,381 professional contacts across them, including 135,112 with verified work emails. The United States is the largest market and London the largest hub.
This list covers computer network security 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 computer network security 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 computer network security companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 18,431 contacts → | ||||
Partial 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 → | ||||
Strong 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 | 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. | |||||
| 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 | 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. | |||||
| 10 | 2,933 contacts → | ||||
Strong evidence “GTT is a leading networking and security as a service provider for multinational organizations, simply and securely connecting people and machines to data and applications –…” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 11 | 2,813 contacts → | ||||
Strong evidence “Infoblox unites networking and security to deliver unmatched performance and protection.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 12 | 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. | |||||
| 13 | 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. | |||||
| 14 | 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. | |||||
| 15 | 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. | |||||
| 16 | 1,669 contacts → | ||||
Indirect evidence “BeyondTrust is the global cybersecurity leader protecting Paths to Privilege™.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 17 | 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. | |||||
| 18 | 1,510 contacts → | ||||
Partial 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 21, 2026Thanks. The Data Team will review it. | |||||
| 19 | 1,378 contacts → | ||||
Partial 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. | |||||
| 20 | 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. | |||||
| 21 | 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. | |||||
| 22 | 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. | |||||
| 23 | 1,217 contacts → | ||||
Indirect evidence “On Dec.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1,119 contacts → | ||||
Indirect evidence “OPSWAT protects critical infrastructure.” Source: RevenueBase Database · checked Sep 21, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1,059 contacts → | ||||
Indirect evidence “WatchGuard® Technologies, Inc.” 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: computer network security 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 computer network security companies.
- Partial evidence
- Its own public description names part of computer network security companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name computer network security 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 22,458 computer network security companies worldwide
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Computer network security 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 computer network security 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 computer network security companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “computer network security 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 computer network security 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 computer network security 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, 135,112 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.
Computer network security companies by location
129 lists · largest firstEvery Computer network security companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Computer network security companies based in the United States5,805
- Computer network security companies based in India1,772
- Computer network security companies based in the United Kingdom1,292
- Computer network security companies based in Brazil732
- Computer network security companies based in France722
- Computer network security companies based in Canada720
- Computer network security companies based in Australia679
- Computer network security companies based in Germany519
- Computer network security companies based in Spain376
- Computer network security companies based in the Netherlands358
- Computer network security companies based in the United Arab Emirates338
- Computer network security companies based in Italy318
- Computer network security companies based in Mexico275
- Computer network security companies based in Türkiye249
- Computer network security companies based in South Africa242
- Computer network security companies based in Israel217
- Computer network security companies based in Switzerland178
- Computer network security companies based in Pakistan175
- Computer network security companies based in Saudi Arabia173
- Computer network security companies based in Belgium165
- Computer network security companies based in Chile163
- Computer network security companies based in Colombia163
- Computer network security companies based in Poland163
- Computer network security companies based in Singapore146
- Computer network security companies based in Indonesia131
- Computer network security companies based in Nigeria131
- Computer network security companies based in Sweden122
- Computer network security companies based in Argentina114
- Computer network security companies based in Malaysia100
- Computer network security companies based in Austria93
- Computer network security companies based in Kenya88
- Computer network security companies based in New Zealand79
- Computer network security companies based in Bangladesh77
- Computer network security companies based in Ireland74
- Computer network security companies based in Morocco69
- Computer network security companies based in Romania69
- Computer network security companies based in Ecuador66
- Computer network security companies based in Egypt66
- Computer network security companies based in Denmark65
- Computer network security companies based in Peru65
- Computer network security companies based in Japan63
- Computer network security companies based in Portugal62
- Computer network security companies based in the Philippines59
- Computer network security companies based in Greece57
- Computer network security companies based in Hungary54
- Computer network security companies based in Thailand52
- Computer network security companies based in Finland51
- Computer network security companies based in Sri Lanka47
- Computer network security companies based in Ukraine43
- Computer network security companies based in Bulgaria39
- Computer network security companies based in the Dominican Republic39
- Computer network security companies based in Jordan37
- Computer network security companies based in Slovakia37
- Computer network security companies based in Qatar36
- Computer network security companies based in Hong Kong33
- Computer network security companies based in Nepal33
- Computer network security companies based in Norway33
- Computer network security companies based in South Korea33
- Computer network security companies based in Luxembourg29
- Computer network security companies based in Taiwan29
- Computer network security companies based in Vietnam29
- Computer network security companies based in Tunisia28
Cities
- Computer network security companies based in London, United Kingdom473
- Computer network security companies based in Sao Paulo, Brazil226
- Computer network security companies based in New York, United States157
- Computer network security companies based in Toronto, Canada149
- Computer network security companies based in Hyderabad, India139
- Computer network security companies based in Sydney, Australia135
- Computer network security companies based in Pune, India134
- Computer network security companies based in Melbourne, Australia126
- Computer network security companies based in Mumbai, India115
- Computer network security companies based in Bangalore, India113
- Computer network security companies based in New Delhi, India111
- Computer network security companies based in Atlanta, United States100
- Computer network security companies based in Austin, United States100
- Computer network security companies based in Houston, United States95
- Computer network security companies based in Chicago, United States91
- Computer network security companies based in Dallas, United States91
- Computer network security companies based in Washington, United States90
- Computer network security companies based in Chennai, India89
- Computer network security companies based in Miami, United States89
- Computer network security companies based in Bengaluru, India82
- Computer network security companies based in Montreal, Canada82
- Computer network security companies based in Tampa, United States82
- Computer network security companies based in Ahmedabad, India77
- Computer network security companies based in Noida, India74
- Computer network security companies based in San Francisco, United States72
- Computer network security companies based in Calgary, Canada63
- Computer network security companies based in Brisbane, Australia54
- Computer network security companies based in San Diego, United States54
- Computer network security companies based in Rio De Janeiro, Brazil52
- Computer network security companies based in Manchester, United Kingdom50
- Computer network security companies based in Ottawa, Canada50
- Computer network security companies based in Columbia, United States49
- Computer network security companies based in Arlington, United States47
- Computer network security companies based in Karachi, Pakistan47
- Computer network security companies based in Los Angeles, United States47
- Computer network security companies based in Charlotte, United States46
- Computer network security companies based in Denver, United States46
- Computer network security companies based in Gurgaon, India45
- Computer network security companies based in Las Vegas, United States45
- Computer network security companies based in Orlando, United States42
- Computer network security companies based in Boston, United States41
- Computer network security companies based in Vancouver, Canada41
- Computer network security companies based in Phoenix, United States39
- Computer network security companies based in Reston, United States37
- Computer network security companies based in San Antonio, United States37
- Computer network security companies based in Alexandria, United States35
- Computer network security companies based in Baltimore, United States35
- Computer network security companies based in Brasilia, Brazil33
- Computer network security companies based in Canberra, Australia33
- Computer network security companies based in Seattle, United States33
- Computer network security companies based in Wilmington, United States32
- Computer network security companies based in Huntsville, United States31
- Computer network security companies based in Mclean, United States31
- Computer network security companies based in Birmingham, United Kingdom30
- Computer network security companies based in Fairfax, United States30
- Computer network security companies based in Gurugram, India30
- Computer network security companies based in Raleigh, United States30
- Computer network security companies based in Scottsdale, United States29
- Computer network security companies based in San Jose, United States28
- Computer network security companies based in Ashburn, United States27
- Computer network security companies based in Belo Horizonte, Brazil27
- Computer network security companies based in Mississauga, Canada27
- Computer network security companies based in Portland, United States26
- Computer network security companies based in Colorado Springs, United States25
- Computer network security companies based in Fort Lauderdale, United States25
- Computer network security companies based in Pittsburgh, United States25
- Computer network security 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 computer network security 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 computer network security companies are there worldwide?
RevenueBase identified 22,458 computer network security 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 computer network security companies?
The United States leads with 5,805 companies, followed by India (1,772) and the United Kingdom (1,292). Every computer network security companies list by country and city is linked on this page.
Which city has the most computer network security companies?
London leads with 481 headquartered companies, followed by Sao Paulo (226) and Dubai (212).
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 135,112 verified decision-maker contacts tracked across these 22,458 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.