Company lists · Data refreshed September 2026
Top 25 IT security management companies worldwide
RevenueBase identified 27,426 IT security management companies worldwide as of September 2026 and tracks 394,611 professional contacts across them, including 125,596 with verified work emails. The United States is the largest market and London the largest hub.
This list covers IT security management 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 28, 2026. Country and city lists for IT security management 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 IT security management companies worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 2 | 12,771 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 4 | 3,673 contacts → | ||||
Indirect evidence “Orange Cyberdefense is the expert cybersecurity business unit of the Orange Group.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 5 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 6 | 3,592 contacts → | ||||
Indirect evidence “U.S.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 7 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 9 | 3,058 contacts → | ||||
Strong 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 28, 2026Thanks. The Data Team will review it. | |||||
| 10 | 2,715 contacts → | ||||
Partial evidence “Varonis unifies AI-native data security, AI security and governance, and behavior-based threat detection.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 11 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 12 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 13 | 2,083 contacts → | ||||
Partial evidence “Acronis is a global cyber protection company delivering the only natively integrated cybersecurity, data protection, and infrastructure management platform for managed service…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 14 | 1,949 contacts → | ||||
Strong evidence “Paragon Systems employs over 10,500 professionals in specialized operations providing security, fire, investigations, inspections, cybersecurity, risk management, and mission…” Source: RevenueBase Database · checked Sep 28, 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 28, 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 28, 2026Thanks. The Data Team will review it. | |||||
| 17 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 18 | 1,374 contacts → | ||||
Partial evidence “First Security Group LLC was founded in 2004 with the vision of His Highness, the Vice President, Prime Minister, and Ruler of Dubai, Sheikh Mohamed bin Rashid Al Maktoum.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 19 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 20 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 21 | 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 28, 2026Thanks. The Data Team will review it. | |||||
| 22 | 1,217 contacts → | ||||
Indirect evidence “On Dec.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 23 | 1,059 contacts → | ||||
Indirect evidence “WatchGuard® Technologies, Inc.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1,050 contacts → | ||||
Strong evidence “Brosnan Risk Consultants, Ltd.(BRC) is a security risk management firm focusing on physical security, emergency security, disaster preparedness and recovery and management…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1,037 contacts → | ||||
Indirect evidence “Synoptek is a leading global managed services provider and technology consulting firm that delivers transformative business results.” Source: RevenueBase Database · checked Sep 28, 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: IT security management 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 IT security management companies.
- Partial evidence
- Its own public description names part of IT security management companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name IT security management 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 27,426 IT security management companies worldwide
See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 125,596 reachable decision-makers.
Free signup · no credit card
IT security management companies worldwide at a glance
As of Sep 28, 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 IT security management 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 IT security management companies are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “IT security management 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 IT security management 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 IT security management 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, 125,596 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 28, 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.
IT security management companies by location
184 lists · largest firstEvery IT security management companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- IT security management companies based in the United States7,226
- IT security management companies based in India1,889
- IT security management companies based in the United Kingdom1,626
- IT security management companies based in Brazil1,148
- IT security management companies based in Germany938
- IT security management companies based in Canada937
- IT security management companies based in France840
- IT security management companies based in Australia796
- IT security management companies based in the Netherlands450
- IT security management companies based in Italy410
- IT security management companies based in Spain403
- IT security management companies based in the United Arab Emirates393
- IT security management companies based in South Africa316
- IT security management companies based in Mexico314
- IT security management companies based in Türkiye272
- IT security management companies based in Switzerland241
- IT security management companies based in Israel223
- IT security management companies based in Poland213
- IT security management companies based in Belgium207
- IT security management companies based in Pakistan203
- IT security management companies based in Sweden193
- IT security management companies based in Colombia180
- IT security management companies based in Saudi Arabia169
- IT security management companies based in Chile162
- IT security management companies based in Indonesia149
- IT security management companies based in Singapore149
- IT security management companies based in Argentina147
- IT security management companies based in Nigeria137
- IT security management companies based in Malaysia114
- IT security management companies based in Austria112
- IT security management companies based in China107
- IT security management companies based in Kenya98
- IT security management companies based in New Zealand96
- IT security management companies based in Ireland91
- IT security management companies based in Portugal89
- IT security management companies based in Egypt87
- IT security management companies based in Romania87
- IT security management companies based in Denmark85
- IT security management companies based in Peru76
- IT security management companies based in Hungary73
- IT security management companies based in the Philippines72
- IT security management companies based in Morocco69
- IT security management companies based in Ecuador68
- IT security management companies based in Greece68
- IT security management companies based in Finland65
- IT security management companies based in Japan64
- IT security management companies based in Sri Lanka54
- IT security management companies based in Thailand53
- IT security management companies based in Norway52
- IT security management companies based in Russia52
- IT security management companies based in Bulgaria46
- IT security management companies based in Slovakia46
- IT security management companies based in Ukraine46
- IT security management companies based in Estonia41
- IT security management companies based in Qatar41
- IT security management companies based in Hong Kong39
- IT security management companies based in Cyprus35
- IT security management companies based in Jordan35
- IT security management companies based in Luxembourg34
- IT security management companies based in Nepal34
- IT security management companies based in the Dominican Republic29
- IT security management companies based in Croatia28
- IT security management companies based in Venezuela27
- IT security management companies based in Panama25
- IT security management companies based in Puerto Rico25
Cities
- IT security management companies based in London, United Kingdom586
- IT security management companies based in Sao Paulo, Brazil322
- IT security management companies based in Dubai, United Arab Emirates232
- IT security management companies based in Paris, France211
- IT security management companies based in Toronto, Canada208
- IT security management companies based in New York, United States200
- IT security management companies based in Hyderabad, India155
- IT security management companies based in Sydney, Australia154
- IT security management companies based in Melbourne, Australia147
- IT security management companies based in Pune, India146
- IT security management companies based in Houston, United States140
- IT security management companies based in Mumbai, India134
- IT security management companies based in Singapore, Singapore128
- IT security management companies based in Bangalore, India118
- IT security management companies based in Atlanta, United States115
- IT security management companies based in Austin, United States114
- IT security management companies based in Riyadh, Saudi Arabia110
- IT security management companies based in Miami, United States109
- IT security management companies based in New Delhi, India108
- IT security management companies based in Istanbul, Türkiye105
- IT security management companies based in Madrid, Spain104
- IT security management companies based in Noida, India101
- IT security management companies based in Washington, United States101
- IT security management companies based in Chicago, United States100
- IT security management companies based in Dallas, United States100
- IT security management companies based in Chennai, India96
- IT security management companies based in Montreal, Canada95
- IT security management companies based in Tampa, United States86
- IT security management companies based in San Francisco, United States85
- IT security management companies based in Stockholm, Sweden85
- IT security management companies based in Bengaluru, India84
- IT security management companies based in Rio De Janeiro, Brazil84
- IT security management companies based in Johannesburg, South Africa82
- IT security management companies based in Nairobi, Kenya82
- IT security management companies based in Ahmedabad, India79
- IT security management companies based in Calgary, Canada77
- IT security management companies based in San Diego, United States70
- IT security management companies based in Los Angeles, United States69
- IT security management companies based in Berlin, Germany64
- IT security management companies based in Barcelona, Spain63
- IT security management companies based in Ottawa, Canada63
- IT security management companies based in Charlotte, United States61
- IT security management companies based in Warszawa, Poland60
- IT security management companies based in Karachi, Pakistan59
- IT security management companies based in Denver, United States58
- IT security management companies based in Brisbane, Australia55
- IT security management companies based in Bogota, Colombia54
- IT security management companies based in Boston, United States54
- IT security management companies based in Tel Aviv, Israel53
- IT security management companies based in Las Vegas, United States52
- IT security management companies based in Arlington, United States51
- IT security management companies based in Manchester, United Kingdom51
- IT security management companies based in Vancouver, Canada51
- IT security management companies based in Phoenix, United States50
- IT security management companies based in Santiago, Chile50
- IT security management companies based in Delhi, India48
- IT security management companies based in Cape Town, South Africa47
- IT security management companies based in Brasilia, Brazil45
- IT security management companies based in Columbia, United States45
- IT security management companies based in Orlando, United States45
- IT security management companies based in Belo Horizonte, Brazil44
- IT security management companies based in San Antonio, United States44
- IT security management companies based in Cairo, Egypt43
- IT security management companies based in Alexandria, United States42
- IT security management companies based in Gurgaon, India41
- IT security management companies based in Seattle, United States41
- IT security management companies based in Mississauga, Canada40
- IT security management companies based in Gurugram, India39
- IT security management companies based in Wilmington, United States39
- IT security management companies based in Jakarta, Indonesia38
- IT security management companies based in Kuala Lumpur, Malaysia38
- IT security management companies based in Raleigh, United States38
- IT security management companies based in Auckland, New Zealand37
- IT security management companies based in Lima, Peru37
- IT security management companies based in Abu Dhabi, United Arab Emirates36
- IT security management companies based in Irvine, United States36
- IT security management companies based in Quito, Ecuador36
- IT security management companies based in Amsterdam, Netherlands35
- IT security management companies based in Baltimore, United States35
- IT security management companies based in Canberra, Australia34
- IT security management companies based in Fairfax, United States34
- IT security management companies based in Zurich, Switzerland34
- IT security management companies based in Munich, Germany33
- IT security management companies based in Reston, United States33
- IT security management companies based in Buenos Aires, Argentina32
- IT security management companies based in Curitiba, Brazil32
- IT security management companies based in Mclean, United States32
- IT security management companies based in Portland, United States32
- IT security management companies based in Richmond, United States32
- IT security management companies based in Alpharetta, United States31
- IT security management companies based in Bangkok, Thailand31
- IT security management companies based in Bucharest, Romania31
- IT security management companies based in Plano, United States31
- IT security management companies based in Fort Lauderdale, United States30
- IT security management companies based in Minneapolis, United States30
- IT security management companies based in Roma, Italy30
- IT security management companies based in Scottsdale, United States30
- IT security management companies based in Ashburn, United States29
- IT security management companies based in Columbus, United States29
- IT security management companies based in Hamburg, Germany29
- IT security management companies based in Indianapolis, United States29
- IT security management companies based in Navi Mumbai, India29
- IT security management companies based in Wellington, New Zealand29
- IT security management companies based in Ankara, Türkiye28
- IT security management companies based in Birmingham, United Kingdom28
- IT security management companies based in Pittsburgh, United States28
- IT security management companies based in Rome, Italy28
- IT security management companies based in San Jose, United States28
- IT security management companies based in Athens, Greece27
- IT security management companies based in Barueri, Brazil27
- IT security management companies based in Edmonton, Canada27
- IT security management companies based in Huntsville, United States27
- IT security management companies based in Lyon, France27
- IT security management companies based in Nashville, United States27
- IT security management companies based in Porto Alegre, Brazil27
- IT security management companies based in Wien, Austria27
- IT security management companies based in Dover, United States26
- IT security management companies based in Jacksonville, United States26
- IT security management companies based in Kyiv, Ukraine25
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 IT security management 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 IT security management companies are there worldwide?
RevenueBase identified 27,426 IT security management 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?
Fortinet, headquartered in Sunnyvale, tops this list with the largest team on record.
Which country has the most IT security management companies?
The United States leads with 7,226 companies, followed by India (1,889) and the United Kingdom (1,626). Every IT security management companies list by country and city is linked on this page.
Which city has the most IT security management companies?
London leads with 595 headquartered companies, followed by Sao Paulo (322) and Dubai (232).
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 125,596 verified decision-maker contacts tracked across these 27,426 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 28, 2026.
Ready to reach these companies? Verified emails and direct dials for all 27,426 IT security management companies worldwide. Start with a free account, no credit card.
Download this list →Related lists
Browse the directory
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.