Company lists · Data refreshed September 2026
Top 25 Data center security service providers worldwide
RevenueBase identified 18,657 data center security service providers worldwide as of September 2026 and tracks 653,368 professional contacts across them, including 83,606 with verified work emails. The United States is the largest market and London the largest hub.
This list covers data center security service providers 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 data center security service providers 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 data center security service providers worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 79,699 contacts → | ||||
Partial evidence “G4S is a leading security and facility services company that provides proactive security services and cutting-edge smart technology to deliver tailored, integrated security…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 2 | 62,804 contacts → | ||||
Partial evidence “Allied Universal®, a leading security and facility services company, provides proactive security services and cutting-edge smart technology to deliver evolving, tailored solutions…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 40,747 contacts → | ||||
Indirect evidence “50 Years of Excellence: Experience, Innovation, and Commitment to Safety.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 4 | 38,634 contacts → | ||||
Partial evidence “Securitas knows Security.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 5 | 17,041 contacts → | ||||
Partial evidence “GardaWorld is the world’s largest privately-owned security services company, offering cash services, physical and specialized security solutions, and with our Crisis24 portal, the…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 6 | 12,771 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 7 | 6,335 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 4,610 contacts → | ||||
Partial evidence “Certis is a leading advanced integrated security organisation that develops and delivers multi-disciplinary smart security and integrated services.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 9 | 4,530 contacts → | ||||
Indirect evidence “A SegurPro é o próximo passo em segurança privada.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 10 | 4,038 contacts → | ||||
Partial evidence “Excelsior Defense is a security and investigations company based out of St.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 11 | 3,843 contacts → | ||||
Partial evidence “Securitas vous apporte son savoir‑faire et ses compétences dans la sécurisation de votre entreprise.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 12 | 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. | |||||
| 13 | 3,620 contacts → | ||||
Partial evidence “Securitas, Soluciones de Seguridad a medida Nuestro liderazgo en conocimientos de seguridad nos ha permitido desarrollar una estrategia basada en tres pilares fundamentales…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 14 | 3,592 contacts → | ||||
Indirect evidence “U.S.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 15 | 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. | |||||
| 16 | 3,004 contacts → | ||||
Partial evidence “Securitas is a global knowledge leader in security.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 17 | 2,523 contacts → | ||||
Strong 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 28, 2026Thanks. The Data Team will review it. | |||||
| 18 | 2,462 contacts → | ||||
Indirect evidence “A Orsegups atua desde 1977 na prestação de serviços de segurança e terceirização de serviços especializados.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 19 | 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. | |||||
| 20 | 2,165 contacts → | ||||
Indirect evidence “Com mais de 8 mil colaboradores, presente em 11 estados, vencedora do Prêmio Valor Carreira por sete vezes consecutivas, certificada pela GPTW e única empresa brasileira membro do…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 21 | 2,045 contacts → | ||||
Partial evidence “Everon is a leading national provider of commercial security, video, fire, sprinkler, and life safety solutions for complex, multi-site businesses and organizations.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 22 | 1,949 contacts → | ||||
Partial 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. | |||||
| 23 | 1,922 contacts → | ||||
Indirect evidence “Elke dag zetten onze collega’s zich in voor jouw veiligheid en die van iedereen om jou heen, zodat jij je veilig voelt en veilig bent.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 24 | 1,813 contacts → | ||||
Partial evidence “At Wilson Security, we are committed to building a safer future for everyone.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 25 | 1,727 contacts → | ||||
Indirect evidence “HSS is now Tarian!” 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: data center security service providers. 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 data center security service providers.
- Partial evidence
- Its own public description names part of data center security service providers, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name data center security service providers. 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 18,657 data center security service providers worldwide
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Data center security service providers 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 data center security service providers, 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 data center security service providers are linked below.
- What qualifies
- Companies worldwide whose own description of what they do matches “data center security service providers”. 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 data center security service providers), 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 data center security service providers, 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, 83,606 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.
Data center security service providers by location
112 lists · largest firstEvery Data center security service providers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Data center security service providers based in the United States3,718
- Data center security service providers based in the United Kingdom1,082
- Data center security service providers based in India1,062
- Data center security service providers based in Brazil971
- Data center security service providers based in France812
- Data center security service providers based in Germany623
- Data center security service providers based in Canada607
- Data center security service providers based in Australia559
- Data center security service providers based in the Netherlands404
- Data center security service providers based in Mexico359
- Data center security service providers based in Italy347
- Data center security service providers based in South Africa340
- Data center security service providers based in Spain334
- Data center security service providers based in the United Arab Emirates252
- Data center security service providers based in Argentina235
- Data center security service providers based in Chile208
- Data center security service providers based in Colombia203
- Data center security service providers based in Türkiye175
- Data center security service providers based in Belgium166
- Data center security service providers based in Switzerland165
- Data center security service providers based in Poland161
- Data center security service providers based in Peru144
- Data center security service providers based in Sweden143
- Data center security service providers based in Saudi Arabia113
- Data center security service providers based in Pakistan110
- Data center security service providers based in Israel101
- Data center security service providers based in Nigeria99
- Data center security service providers based in Indonesia97
- Data center security service providers based in Kenya94
- Data center security service providers based in Ecuador88
- Data center security service providers based in Romania88
- Data center security service providers based in Egypt84
- Data center security service providers based in New Zealand84
- Data center security service providers based in Malaysia80
- Data center security service providers based in Portugal71
- Data center security service providers based in Denmark60
- Data center security service providers based in Austria59
- Data center security service providers based in Ireland59
- Data center security service providers based in the Philippines55
- Data center security service providers based in Bangladesh54
- Data center security service providers based in Greece54
- Data center security service providers based in Qatar51
- Data center security service providers based in Ukraine43
- Data center security service providers based in Finland40
- Data center security service providers based in Hungary40
- Data center security service providers based in Norway40
- Data center security service providers based in the Dominican Republic34
- Data center security service providers based in Thailand33
- Data center security service providers based in Costa Rica32
- Data center security service providers based in Uruguay31
- Data center security service providers based in Slovakia28
- Data center security service providers based in Bulgaria25
- Data center security service providers based in Luxembourg25
Cities
- Data center security service providers based in London, United Kingdom293
- Data center security service providers based in Sao Paulo, Brazil232
- Data center security service providers based in Dubai, United Arab Emirates138
- Data center security service providers based in Toronto, Canada111
- Data center security service providers based in Paris, France109
- Data center security service providers based in New York, United States99
- Data center security service providers based in Houston, United States85
- Data center security service providers based in New Delhi, India82
- Data center security service providers based in Sydney, Australia80
- Data center security service providers based in Nairobi, Kenya79
- Data center security service providers based in Dallas, United States78
- Data center security service providers based in Melbourne, Australia78
- Data center security service providers based in Bogota, Colombia73
- Data center security service providers based in Hyderabad, India70
- Data center security service providers based in Istanbul, Türkiye65
- Data center security service providers based in Bangalore, India64
- Data center security service providers based in Miami, United States64
- Data center security service providers based in Pune, India64
- Data center security service providers based in Madrid, Spain63
- Data center security service providers based in Los Angeles, United States62
- Data center security service providers based in Mumbai, India62
- Data center security service providers based in Riyadh, Saudi Arabia62
- Data center security service providers based in Santiago, Chile60
- Data center security service providers based in Rio De Janeiro, Brazil59
- Data center security service providers based in Johannesburg, South Africa58
- Data center security service providers based in Berlin, Germany48
- Data center security service providers based in Ahmedabad, India47
- Data center security service providers based in Chennai, India47
- Data center security service providers based in Austin, United States46
- Data center security service providers based in Quito, Ecuador45
- Data center security service providers based in Bengaluru, India44
- Data center security service providers based in Noida, India44
- Data center security service providers based in Stockholm, Sweden44
- Data center security service providers based in Atlanta, United States41
- Data center security service providers based in Calgary, Canada41
- Data center security service providers based in Chicago, United States40
- Data center security service providers based in Auckland, New Zealand36
- Data center security service providers based in Denver, United States35
- Data center security service providers based in Warszawa, Poland35
- Data center security service providers based in Manchester, United Kingdom34
- Data center security service providers based in Mississauga, Canada34
- Data center security service providers based in Montreal, Canada34
- Data center security service providers based in Phoenix, United States34
- Data center security service providers based in Charlotte, United States33
- Data center security service providers based in Ottawa, Canada33
- Data center security service providers based in Brisbane, Australia32
- Data center security service providers based in Curitiba, Brazil32
- Data center security service providers based in Dhaka, Bangladesh32
- Data center security service providers based in Birmingham, United Kingdom31
- Data center security service providers based in Doha, Qatar30
- Data center security service providers based in Tampa, United States30
- Data center security service providers based in Barcelona, Spain29
- Data center security service providers based in Abu Dhabi, United Arab Emirates28
- Data center security service providers based in Porto Alegre, Brazil27
- Data center security service providers based in Washington, United States27
- Data center security service providers based in Gurgaon, India26
- Data center security service providers based in Kuala Lumpur, Malaysia26
- Data center security service providers based in Boston, United States25
- Data center security service providers based in Tel Aviv, Israel25
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 data center security service providers, 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 data center security service providers are there worldwide?
RevenueBase identified 18,657 data center security service providers 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?
G4s, headquartered in London, tops this list with the largest team on record.
Which country has the most data center security service providers?
The United States leads with 3,718 companies, followed by the United Kingdom (1,082) and India (1,062). Every data center security service providers list by country and city is linked on this page.
Which city has the most data center security service providers?
London leads with 300 headquartered companies, followed by Sao Paulo (232) and Dubai (138).
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 83,606 verified decision-maker contacts tracked across these 18,657 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.
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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.