Company lists · Data refreshed November 2026
Top 25 Critical infrastructure security firms worldwide
RevenueBase identified 17,339 company matches for critical infrastructure security firms worldwide as of November 2026 and tracks 371,486 professional contacts across them, including 87,289 with verified work emails. The United States is the largest market and London the largest hub.
This list covers company matches for critical infrastructure security firms worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 5, 2026. Country and city lists for critical infrastructure security firms follow the table.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 critical infrastructure security firms worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 40,551 contacts → | ||||
Exact match “Securitas knows Security.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 2 | 13,149 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 3 | 7,033 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 4 | 6,031 contacts → | ||||
Exact match “Convergint is a global systems integrator focused on delivering results for our customers through unparalleled service excellence.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 5 | 5,283 contacts → | ||||
Exact match “Sophos, a global cybersecurity leader, defends more than organizations worldwide with Sophos Fusion, the industry's first and most complete AI-native cybersecurity defense system…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 6 | 5,040 contacts → | ||||
Exact match “Certis is a leading advanced integrated security organisation that develops and delivers multi-disciplinary smart security and integrated services.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 7 | 4,263 contacts → | ||||
Exact match “U.S.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 8 | 3,977 contacts → | ||||
Exact match “Orange Cyberdefense is the expert cybersecurity business unit of the Orange Group.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 9 | 3,593 contacts → | ||||
Exact match “Il Gruppo Sicuritalia, con oltre 18.500 dipendenti, è la più grande azienda italiana ed il secondo player privato europeo in ambito Security.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 10 | 3,355 contacts → | ||||
Exact match “Every year new technologies, vendors, and solutions emerge-yet despite this constant innovation, high-profile breaches are all over the headlines.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 11 | 2,171 contacts → | ||||
Exact match “Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 12 | 1,928 contacts → | ||||
Exact match “Paragon Systems employs over 10,500 professionals in specialized operations providing security, fire, investigations, inspections, cybersecurity, risk management, and mission…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 13 | 1,572 contacts → | ||||
Exact match “ICTS Europe is Europe’s leading security specialist.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 14 | 1,514 contacts → | ||||
Exact match “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…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 15 | 1,460 contacts → | ||||
Exact match “At Imvula Quality Protection, we don’t just provide security, we create peace of mind.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 16 | 1,449 contacts → | ||||
Exact match “See a different world.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 17 | 1,413 contacts → | ||||
Exact match “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.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 18 | 1,403 contacts → | ||||
Exact match “Sangfor Technologies is a global leader in cybersecurity, cloud computing, and IT infrastructure, providing fully integrated and AI-driven solutions.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 19 | 1,346 contacts → | ||||
Exact match “GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 20 | 1,203 contacts → | ||||
Exact match “SOS Security is a known innovator and leader in the security and protective services industry.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 21 | 1,192 contacts → | ||||
Exact match “On Dec.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 22 | 1,192 contacts → | ||||
Exact match “OPSWAT protects critical infrastructure.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 23 | 1,186 contacts → | ||||
Exact match “Securitas Critical Infrastructure Services, Inc.(SCIS) is a provider of specialized security and fire services to the highly regulated Nuclear, Aerospace, Defense, Energy, and…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 24 | 1,168 contacts → | ||||
Exact match “Founded in 1982, St.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 25 | 1,159 contacts → | ||||
Exact match “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.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “critical infrastructure security firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 17,339 critical infrastructure security firms worldwide
See the full list, filter by size, metro and specialty, and access 87,289 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Critical infrastructure security firms worldwide at a glance
As of Nov 5, 2026Companies by employee count
Email recency is reported on each country list linked below.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- Coverage
- Every country. Country and city lists for critical infrastructure security firms are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “critical infrastructure security firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- 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 displayed company carries at least one verified work email. RevenueBase tracks 87,289 professional contacts with verified work emails across the full matched dataset. 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 November 5, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Critical infrastructure security firms by location
139 lists · largest firstEvery Critical infrastructure security firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Critical infrastructure security firms based in the United States4,167
- Critical infrastructure security firms based in India1,231
- Critical infrastructure security firms based in the United Kingdom1,058
- Critical infrastructure security firms based in France558
- Critical infrastructure security firms based in Australia552
- Critical infrastructure security firms based in Brazil533
- Critical infrastructure security firms based in Canada499
- Critical infrastructure security firms based in Germany399
- Critical infrastructure security firms based in the United Arab Emirates316
- Critical infrastructure security firms based in the Netherlands288
- Critical infrastructure security firms based in Italy278
- Critical infrastructure security firms based in Spain255
- Critical infrastructure security firms based in Mexico249
- Critical infrastructure security firms based in South Africa227
- Critical infrastructure security firms based in Israel182
- Critical infrastructure security firms based in Türkiye182
- Critical infrastructure security firms based in Saudi Arabia160
- Critical infrastructure security firms based in Colombia158
- Critical infrastructure security firms based in Chile156
- Critical infrastructure security firms based in Switzerland140
- Critical infrastructure security firms based in Pakistan130
- Critical infrastructure security firms based in Belgium127
- Critical infrastructure security firms based in Poland127
- Critical infrastructure security firms based in Argentina124
- Critical infrastructure security firms based in Nigeria120
- Critical infrastructure security firms based in Sweden107
- Critical infrastructure security firms based in Indonesia89
- Critical infrastructure security firms based in Singapore87
- Critical infrastructure security firms based in Romania76
- Critical infrastructure security firms based in New Zealand71
- Critical infrastructure security firms based in Kenya68
- Critical infrastructure security firms based in Morocco68
- Critical infrastructure security firms based in Egypt66
- Critical infrastructure security firms based in Austria62
- Critical infrastructure security firms based in Malaysia62
- Critical infrastructure security firms based in Czechia60
- Critical infrastructure security firms based in Peru60
- Critical infrastructure security firms based in Portugal59
- Critical infrastructure security firms based in Denmark57
- Critical infrastructure security firms based in Ecuador57
- Critical infrastructure security firms based in Qatar55
- Critical infrastructure security firms based in Ireland49
- Critical infrastructure security firms based in Ukraine48
- Critical infrastructure security firms based in Greece47
- Critical infrastructure security firms based in the Philippines47
- Critical infrastructure security firms based in Finland45
- Critical infrastructure security firms based in Thailand41
- Critical infrastructure security firms based in Japan39
- Critical infrastructure security firms based in Slovakia35
- Critical infrastructure security firms based in Bulgaria32
- Critical infrastructure security firms based in Norway31
- Critical infrastructure security firms based in Hungary30
- Critical infrastructure security firms based in Hong Kong28
- Critical infrastructure security firms based in Estonia27
- Critical infrastructure security firms based in Cyprus26
- Critical infrastructure security firms based in Luxembourg26
- Critical infrastructure security firms based in Costa Rica25
- Critical infrastructure security firms based in Jordan25
Cities
- Critical infrastructure security firms based in London, United Kingdom382
- Critical infrastructure security firms based in Dubai, United Arab Emirates191
- Critical infrastructure security firms based in Sao Paulo, Brazil176
- Critical infrastructure security firms based in Paris, France148
- Critical infrastructure security firms based in Bangalore, India138
- Critical infrastructure security firms based in New York, United States127
- Critical infrastructure security firms based in Toronto, Canada107
- Critical infrastructure security firms based in Hyderabad, India105
- Critical infrastructure security firms based in Sydney, Australia102
- Critical infrastructure security firms based in Melbourne, Australia100
- Critical infrastructure security firms based in Pune, India97
- Critical infrastructure security firms based in Riyadh, Saudi Arabia95
- Critical infrastructure security firms based in Houston, United States87
- Critical infrastructure security firms based in Mumbai, India84
- Critical infrastructure security firms based in New Delhi, India82
- Critical infrastructure security firms based in Singapore, Singapore75
- Critical infrastructure security firms based in Chennai, India74
- Critical infrastructure security firms based in Atlanta, United States72
- Critical infrastructure security firms based in Washington, United States71
- Critical infrastructure security firms based in Madrid, Spain70
- Critical infrastructure security firms based in Istanbul, Türkiye67
- Critical infrastructure security firms based in Austin, United States66
- Critical infrastructure security firms based in Miami, United States65
- Critical infrastructure security firms based in Dallas, United States64
- Critical infrastructure security firms based in Nairobi, Kenya61
- Critical infrastructure security firms based in Mexico City, Mexico59
- Critical infrastructure security firms based in Chicago, United States56
- Critical infrastructure security firms based in Tampa, United States56
- Critical infrastructure security firms based in Johannesburg, South Africa53
- Critical infrastructure security firms based in Bogota, Colombia52
- Critical infrastructure security firms based in Buenos Aires, Argentina52
- Critical infrastructure security firms based in Montreal, Canada52
- Critical infrastructure security firms based in Ahmedabad, India51
- Critical infrastructure security firms based in Santiago, Chile51
- Critical infrastructure security firms based in Warsaw, Poland51
- Critical infrastructure security firms based in Gurgaon, India50
- Critical infrastructure security firms based in Tel Aviv, Israel48
- Critical infrastructure security firms based in Noida, India47
- Critical infrastructure security firms based in Los Angeles, United States46
- Critical infrastructure security firms based in Ottawa, Canada46
- Critical infrastructure security firms based in Brisbane, Australia43
- Critical infrastructure security firms based in Charlotte, United States42
- Critical infrastructure security firms based in Stockholm, Sweden42
- Critical infrastructure security firms based in Berlin, Germany41
- Critical infrastructure security firms based in Manchester, United Kingdom40
- Critical infrastructure security firms based in Rio De Janeiro, Brazil40
- Critical infrastructure security firms based in Rome, Italy40
- Critical infrastructure security firms based in Barcelona, Spain39
- Critical infrastructure security firms based in Cairo, Egypt39
- Critical infrastructure security firms based in Columbia, United States39
- Critical infrastructure security firms based in Orlando, United States39
- Critical infrastructure security firms based in San Francisco, United States39
- Critical infrastructure security firms based in Calgary, Canada38
- Critical infrastructure security firms based in Phoenix, United States38
- Critical infrastructure security firms based in Arlington, United States37
- Critical infrastructure security firms based in Denver, United States35
- Critical infrastructure security firms based in Lagos, Nigeria35
- Critical infrastructure security firms based in San Diego, United States35
- Critical infrastructure security firms based in Boston, United States34
- Critical infrastructure security firms based in Bucharest, Romania33
- Critical infrastructure security firms based in Doha, Qatar33
- Critical infrastructure security firms based in Amsterdam, Netherlands32
- Critical infrastructure security firms based in Las Vegas, United States32
- Critical infrastructure security firms based in Perth, Australia31
- Critical infrastructure security firms based in Reston, United States31
- Critical infrastructure security firms based in San Antonio, United States31
- Critical infrastructure security firms based in Ankara, Türkiye30
- Critical infrastructure security firms based in Auckland, New Zealand30
- Critical infrastructure security firms based in Fairfax, United States30
- Critical infrastructure security firms based in Canberra, Australia29
- Critical infrastructure security firms based in Mclean, United States29
- Critical infrastructure security firms based in Prague, Czechia28
- Critical infrastructure security firms based in Quito, Ecuador28
- Critical infrastructure security firms based in Sheridan, United States28
- Critical infrastructure security firms based in Baltimore, United States27
- Critical infrastructure security firms based in Kyiv, Ukraine27
- Critical infrastructure security firms based in Abu Dhabi, United Arab Emirates26
- Critical infrastructure security firms based in Munich, Germany26
- Critical infrastructure security firms based in Alexandria, United States25
- Critical infrastructure security firms based in Cape Town, South Africa25
- Critical infrastructure security firms based in Jakarta, Indonesia25
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “critical infrastructure security firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many critical infrastructure security firms are there worldwide?
RevenueBase identified 17,339 company matches for critical infrastructure security firms worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Securitas Security Services Usa, INC tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which country has the most critical infrastructure security firms?
The United States leads with 4,167 companies, followed by India (1,231) and the United Kingdom (1,058). Every critical infrastructure security firms list by country and city is linked on this page.
Which city has the most critical infrastructure security firms?
London leads with 387 company records, followed by Dubai (192) and Sao Paulo (176).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 87,289 professional contacts with verified work emails tracked across these 17,339 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 5, 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 SmartSearch, 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.
More company lists
Company intelligence · public preview
Top 25 critical infrastructure security firms worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 17,339 matching company records for critical infrastructure security firms worldwide, with 371,486 tracked contacts and 87,289 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 5, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 critical infrastructure security firms worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Securitas Security Services Usa, INCsecuritasinc.comHQ: Parsippany, MI, United StatesReported employees: 10001+ | Parsippany, MI, United States | 10001+ | Exact match | 40,551 contacts → |
“Securitas knows Security.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Private Sectorlockervault.comHQ: United StatesReported employees: Not recorded | United States | Not recorded | Exact match | 13,149 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 3 |  Securitas Groupsecuritas.comHQ: Stockholm, SwedenReported employees: 10001+ | Stockholm, Sweden | 10001+ | Exact match | 7,033 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 4 |  Convergintconvergint.comHQ: Hoffman Estates, IL, United StatesReported employees: 10001+ | Hoffman Estates, IL, United States | 10001+ | Exact match | 6,031 contacts → |
“Convergint is a global systems integrator focused on delivering results for our customers through unparalleled service excellence.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Sophossophos.comHQ: Abingdon, United KingdomReported employees: 5,001-10,000 | Abingdon, United Kingdom | 5,001-10,000 | Exact match | 5,283 contacts → |
“Sophos, a global cybersecurity leader, defends more than organizations worldwide with Sophos Fusion, the industry's first and most complete AI-native cybersecurity defense system…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Certiscertisgroup.comHQ: SingaporeReported employees: 10001+ | Singapore | 10001+ | Exact match | 5,040 contacts → |
“Certis is a leading advanced integrated security organisation that develops and delivers multi-disciplinary smart security and integrated services.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  U.S. Security Associates, INCussecurityassociates.comHQ: Roswell, UT, United StatesReported employees: 10001+ | Roswell, UT, United States | 10001+ | Exact match | 4,263 contacts → |
“U.S.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Orange Cyberdefenseorangecyberdefense.comHQ: Nanterre, FranceReported employees: 1,001-5,000 | Nanterre, France | 1,001-5,000 | Exact match | 3,977 contacts → |
“Orange Cyberdefense is the expert cybersecurity business unit of the Orange Group.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Sicuritalia S.P.Asicuritalia.itHQ: Milan, ItalyReported employees: 10001+ | Milan, Italy | 10001+ | Exact match | 3,593 contacts → |
“Il Gruppo Sicuritalia, con oltre 18.500 dipendenti, è la più grande azienda italiana ed il secondo player privato europeo in ambito Security.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Arctic Wolfarcticwolf.comHQ: Eden Prairie, United StatesReported employees: 1,001-5,000 | Eden Prairie, United States | 1,001-5,000 | Exact match | 3,355 contacts → |
“Every year new technologies, vendors, and solutions emerge-yet despite this constant innovation, high-profile breaches are all over the headlines.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  OPTIVoptiv.comHQ: Leawood, KS, United StatesReported employees: 1,001-5,000 | Leawood, KS, United States | 1,001-5,000 | Exact match | 2,171 contacts → |
“Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Paragon Systems INCparasys.comHQ: Herndon, VA, United StatesReported employees: 10001+ | Herndon, VA, United States | 10001+ | Exact match | 1,928 contacts → |
“Paragon Systems employs over 10,500 professionals in specialized operations providing security, fire, investigations, inspections, cybersecurity, risk management, and mission…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Icts Europeictseurope.comHQ: Bp12936, FranceReported employees: 10001+ | Bp12936, France | 10001+ | Exact match | 1,572 contacts → |
“ICTS Europe is Europe’s leading security specialist.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Site سايتsite.saHQ: Al Nakheel, Saudi ArabiaReported employees: 501-1,000 | Al Nakheel, Saudi Arabia | 501-1,000 | Exact match | 1,514 contacts → |
“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…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Imvula Quality Protectionimvula.netHQ: Woodmead, South AfricaReported employees: 10001+ | Woodmead, South Africa | 10001+ | Exact match | 1,460 contacts → |
“At Imvula Quality Protection, we don’t just provide security, we create peace of mind.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Securitas Belgiumsecuritas.beHQ: Diegem, BelgiumReported employees: 5,001-10,000 | Diegem, Belgium | 5,001-10,000 | Exact match | 1,449 contacts → |
“See a different world.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Thales Cybersecurity Productscpl.thalesgroup.comHQ: Austin, TX, United StatesReported employees: 1,001-5,000 | Austin, TX, United States | 1,001-5,000 | Exact match | 1,413 contacts → |
“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.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Sangfor Technologiessangfor.comHQ: Shenzhen, ChinaReported employees: 5,001-10,000 | Shenzhen, China | 5,001-10,000 | Exact match | 1,403 contacts → |
“Sangfor Technologies is a global leader in cybersecurity, cloud computing, and IT infrastructure, providing fully integrated and AI-driven solutions.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Guidepoint Securityguidepointsecurity.comHQ: Reston, VA, United StatesReported employees: 1,001-5,000 | Reston, VA, United States | 1,001-5,000 | Exact match | 1,346 contacts → |
“GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  SOS Security LLCsossecurity.comHQ: Parsippany, VA, United StatesReported employees: 10001+ | Parsippany, VA, United States | 10001+ | Exact match | 1,203 contacts → |
“SOS Security is a known innovator and leader in the security and protective services industry.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Impervaimperva.comHQ: Austin, TX, United StatesReported employees: 10001+ | Austin, TX, United States | 10001+ | Exact match | 1,192 contacts → |
“On Dec.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Opswatopswat.comHQ: Tampa, FL, United StatesReported employees: 501-1,000 | Tampa, FL, United States | 501-1,000 | Exact match | 1,192 contacts → |
“OPSWAT protects critical infrastructure.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | HQ: Herndon, VA, United StatesReported employees: 10001+ | Herndon, VA, United States | 10001+ | Exact match | 1,186 contacts → |
“Securitas Critical Infrastructure Services, Inc.(SCIS) is a provider of specialized security and fire services to the highly regulated Nuclear, Aerospace, Defense, Energy, and…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  St. Moritz Security Services, INCsmssi.comHQ: Pittsburgh, PA, United StatesReported employees: 5,001-10,000 | Pittsburgh, PA, United States | 5,001-10,000 | Exact match | 1,168 contacts → |
“Founded in 1982, St.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Seguritechseguritech.comHQ: Mexico City, MexicoReported employees: 1,001-5,000 | Mexico City, Mexico | 1,001-5,000 | Exact match | 1,159 contacts → |
“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.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 17,339 company matches
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Critical infrastructure security firms: dataset insights
November 5, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
17,289 records in the displayed employee bands.
50 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 17,339 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 5, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Critical infrastructure security firms by location
139 lists · largest firstEvery Critical infrastructure security firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Critical infrastructure security firms based in the United States4,167
- Critical infrastructure security firms based in India1,231
- Critical infrastructure security firms based in the United Kingdom1,058
- Critical infrastructure security firms based in France558
- Critical infrastructure security firms based in Australia552
- Critical infrastructure security firms based in Brazil533
- Critical infrastructure security firms based in Canada499
- Critical infrastructure security firms based in Germany399
- Critical infrastructure security firms based in the United Arab Emirates316
- Critical infrastructure security firms based in the Netherlands288
- Critical infrastructure security firms based in Italy278
- Critical infrastructure security firms based in Spain255
- Critical infrastructure security firms based in Mexico249
- Critical infrastructure security firms based in South Africa227
- Critical infrastructure security firms based in Israel182
- Critical infrastructure security firms based in Türkiye182
- Critical infrastructure security firms based in Saudi Arabia160
- Critical infrastructure security firms based in Colombia158
- Critical infrastructure security firms based in Chile156
- Critical infrastructure security firms based in Switzerland140
- Critical infrastructure security firms based in Pakistan130
- Critical infrastructure security firms based in Belgium127
- Critical infrastructure security firms based in Poland127
- Critical infrastructure security firms based in Argentina124
- Critical infrastructure security firms based in Nigeria120
- Critical infrastructure security firms based in Sweden107
- Critical infrastructure security firms based in Indonesia89
- Critical infrastructure security firms based in Singapore87
- Critical infrastructure security firms based in Romania76
- Critical infrastructure security firms based in New Zealand71
- Critical infrastructure security firms based in Kenya68
- Critical infrastructure security firms based in Morocco68
- Critical infrastructure security firms based in Egypt66
- Critical infrastructure security firms based in Austria62
- Critical infrastructure security firms based in Malaysia62
- Critical infrastructure security firms based in Czechia60
- Critical infrastructure security firms based in Peru60
- Critical infrastructure security firms based in Portugal59
- Critical infrastructure security firms based in Denmark57
- Critical infrastructure security firms based in Ecuador57
- Critical infrastructure security firms based in Qatar55
- Critical infrastructure security firms based in Ireland49
- Critical infrastructure security firms based in Ukraine48
- Critical infrastructure security firms based in Greece47
- Critical infrastructure security firms based in the Philippines47
- Critical infrastructure security firms based in Finland45
- Critical infrastructure security firms based in Thailand41
- Critical infrastructure security firms based in Japan39
- Critical infrastructure security firms based in Slovakia35
- Critical infrastructure security firms based in Bulgaria32
- Critical infrastructure security firms based in Norway31
- Critical infrastructure security firms based in Hungary30
- Critical infrastructure security firms based in Hong Kong28
- Critical infrastructure security firms based in Estonia27
- Critical infrastructure security firms based in Cyprus26
- Critical infrastructure security firms based in Luxembourg26
- Critical infrastructure security firms based in Costa Rica25
- Critical infrastructure security firms based in Jordan25
Cities
- Critical infrastructure security firms based in London, United Kingdom382
- Critical infrastructure security firms based in Dubai, United Arab Emirates191
- Critical infrastructure security firms based in Sao Paulo, Brazil176
- Critical infrastructure security firms based in Paris, France148
- Critical infrastructure security firms based in Bangalore, India138
- Critical infrastructure security firms based in New York, United States127
- Critical infrastructure security firms based in Toronto, Canada107
- Critical infrastructure security firms based in Hyderabad, India105
- Critical infrastructure security firms based in Sydney, Australia102
- Critical infrastructure security firms based in Melbourne, Australia100
- Critical infrastructure security firms based in Pune, India97
- Critical infrastructure security firms based in Riyadh, Saudi Arabia95
- Critical infrastructure security firms based in Houston, United States87
- Critical infrastructure security firms based in Mumbai, India84
- Critical infrastructure security firms based in New Delhi, India82
- Critical infrastructure security firms based in Singapore, Singapore75
- Critical infrastructure security firms based in Chennai, India74
- Critical infrastructure security firms based in Atlanta, United States72
- Critical infrastructure security firms based in Washington, United States71
- Critical infrastructure security firms based in Madrid, Spain70
- Critical infrastructure security firms based in Istanbul, Türkiye67
- Critical infrastructure security firms based in Austin, United States66
- Critical infrastructure security firms based in Miami, United States65
- Critical infrastructure security firms based in Dallas, United States64
- Critical infrastructure security firms based in Nairobi, Kenya61
- Critical infrastructure security firms based in Mexico City, Mexico59
- Critical infrastructure security firms based in Chicago, United States56
- Critical infrastructure security firms based in Tampa, United States56
- Critical infrastructure security firms based in Johannesburg, South Africa53
- Critical infrastructure security firms based in Bogota, Colombia52
- Critical infrastructure security firms based in Buenos Aires, Argentina52
- Critical infrastructure security firms based in Montreal, Canada52
- Critical infrastructure security firms based in Ahmedabad, India51
- Critical infrastructure security firms based in Santiago, Chile51
- Critical infrastructure security firms based in Warsaw, Poland51
- Critical infrastructure security firms based in Gurgaon, India50
- Critical infrastructure security firms based in Tel Aviv, Israel48
- Critical infrastructure security firms based in Noida, India47
- Critical infrastructure security firms based in Los Angeles, United States46
- Critical infrastructure security firms based in Ottawa, Canada46
- Critical infrastructure security firms based in Brisbane, Australia43
- Critical infrastructure security firms based in Charlotte, United States42
- Critical infrastructure security firms based in Stockholm, Sweden42
- Critical infrastructure security firms based in Berlin, Germany41
- Critical infrastructure security firms based in Manchester, United Kingdom40
- Critical infrastructure security firms based in Rio De Janeiro, Brazil40
- Critical infrastructure security firms based in Rome, Italy40
- Critical infrastructure security firms based in Barcelona, Spain39
- Critical infrastructure security firms based in Cairo, Egypt39
- Critical infrastructure security firms based in Columbia, United States39
- Critical infrastructure security firms based in Orlando, United States39
- Critical infrastructure security firms based in San Francisco, United States39
- Critical infrastructure security firms based in Calgary, Canada38
- Critical infrastructure security firms based in Phoenix, United States38
- Critical infrastructure security firms based in Arlington, United States37
- Critical infrastructure security firms based in Denver, United States35
- Critical infrastructure security firms based in Lagos, Nigeria35
- Critical infrastructure security firms based in San Diego, United States35
- Critical infrastructure security firms based in Boston, United States34
- Critical infrastructure security firms based in Bucharest, Romania33
- Critical infrastructure security firms based in Doha, Qatar33
- Critical infrastructure security firms based in Amsterdam, Netherlands32
- Critical infrastructure security firms based in Las Vegas, United States32
- Critical infrastructure security firms based in Perth, Australia31
- Critical infrastructure security firms based in Reston, United States31
- Critical infrastructure security firms based in San Antonio, United States31
- Critical infrastructure security firms based in Ankara, Türkiye30
- Critical infrastructure security firms based in Auckland, New Zealand30
- Critical infrastructure security firms based in Fairfax, United States30
- Critical infrastructure security firms based in Canberra, Australia29
- Critical infrastructure security firms based in Mclean, United States29
- Critical infrastructure security firms based in Prague, Czechia28
- Critical infrastructure security firms based in Quito, Ecuador28
- Critical infrastructure security firms based in Sheridan, United States28
- Critical infrastructure security firms based in Baltimore, United States27
- Critical infrastructure security firms based in Kyiv, Ukraine27
- Critical infrastructure security firms based in Abu Dhabi, United Arab Emirates26
- Critical infrastructure security firms based in Munich, Germany26
- Critical infrastructure security firms based in Alexandria, United States25
- Critical infrastructure security firms based in Cape Town, South Africa25
- Critical infrastructure security firms based in Jakarta, Indonesia25
Questions about this company list
What does Exact match mean for critical infrastructure security firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many critical infrastructure security firms did RevenueBase find worldwide?
The saved snapshot records 17,339 matching company records, 371,486 tracked contacts and 87,289 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 5, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Browse the directory
Cite this list
RevenueBase Data Team. Top 25 critical infrastructure security firms worldwide. Snapshot: November 5, 2026. https://revenuebase.ai/companies/browse/critical-infrastructure-security-firms.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
Company intelligence · public preview
Top 25 critical infrastructure security firms worldwide
RevenueBase records 17,339 matching company records for critical infrastructure security firms worldwide, with 371,486 tracked contacts and 87,289 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 5, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 critical infrastructure security firms worldwide
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Securitas Security Services Usa, INCsecuritasinc.com HQ: Parsippany, MI, United StatesReported employees: 10001+ | Parsippany, MI, United States | 10001+ | Exact match | 40,551 contacts → |
“Securitas knows Security.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Private Sectorlockervault.com HQ: United StatesReported employees: Not recorded | United States | Not recorded | Exact match | 13,149 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 3 | Securitas Groupsecuritas.com HQ: Stockholm, SwedenReported employees: 10001+ | Stockholm, Sweden | 10001+ | Exact match | 7,033 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 4 | Convergintconvergint.com HQ: Hoffman Estates, IL, United StatesReported employees: 10001+ | Hoffman Estates, IL, United States | 10001+ | Exact match | 6,031 contacts → |
“Convergint is a global systems integrator focused on delivering results for our customers through unparalleled service excellence.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Sophossophos.com HQ: Abingdon, United KingdomReported employees: 5,001-10,000 | Abingdon, United Kingdom | 5,001-10,000 | Exact match | 5,283 contacts → |
“Sophos, a global cybersecurity leader, defends more than organizations worldwide with Sophos Fusion, the industry's first and most complete AI-native cybersecurity defense system…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Certiscertisgroup.com HQ: SingaporeReported employees: 10001+ | Singapore | 10001+ | Exact match | 5,040 contacts → |
“Certis is a leading advanced integrated security organisation that develops and delivers multi-disciplinary smart security and integrated services.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | U.S. Security Associates, INCussecurityassociates.com HQ: Roswell, UT, United StatesReported employees: 10001+ | Roswell, UT, United States | 10001+ | Exact match | 4,263 contacts → |
“U.S.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Orange Cyberdefenseorangecyberdefense.com HQ: Nanterre, FranceReported employees: 1,001-5,000 | Nanterre, France | 1,001-5,000 | Exact match | 3,977 contacts → |
“Orange Cyberdefense is the expert cybersecurity business unit of the Orange Group.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Sicuritalia S.P.Asicuritalia.it HQ: Milan, ItalyReported employees: 10001+ | Milan, Italy | 10001+ | Exact match | 3,593 contacts → |
“Il Gruppo Sicuritalia, con oltre 18.500 dipendenti, è la più grande azienda italiana ed il secondo player privato europeo in ambito Security.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Arctic Wolfarcticwolf.com HQ: Eden Prairie, United StatesReported employees: 1,001-5,000 | Eden Prairie, United States | 1,001-5,000 | Exact match | 3,355 contacts → |
“Every year new technologies, vendors, and solutions emerge-yet despite this constant innovation, high-profile breaches are all over the headlines.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | OPTIVoptiv.com HQ: Leawood, KS, United StatesReported employees: 1,001-5,000 | Leawood, KS, United States | 1,001-5,000 | Exact match | 2,171 contacts → |
“Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Paragon Systems INCparasys.com HQ: Herndon, VA, United StatesReported employees: 10001+ | Herndon, VA, United States | 10001+ | Exact match | 1,928 contacts → |
“Paragon Systems employs over 10,500 professionals in specialized operations providing security, fire, investigations, inspections, cybersecurity, risk management, and mission…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Icts Europeictseurope.com HQ: Bp12936, FranceReported employees: 10001+ | Bp12936, France | 10001+ | Exact match | 1,572 contacts → |
“ICTS Europe is Europe’s leading security specialist.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Site سايتsite.sa HQ: Al Nakheel, Saudi ArabiaReported employees: 501-1,000 | Al Nakheel, Saudi Arabia | 501-1,000 | Exact match | 1,514 contacts → |
“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…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Imvula Quality Protectionimvula.net HQ: Woodmead, South AfricaReported employees: 10001+ | Woodmead, South Africa | 10001+ | Exact match | 1,460 contacts → |
“At Imvula Quality Protection, we don’t just provide security, we create peace of mind.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Securitas Belgiumsecuritas.be HQ: Diegem, BelgiumReported employees: 5,001-10,000 | Diegem, Belgium | 5,001-10,000 | Exact match | 1,449 contacts → |
“See a different world.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Thales Cybersecurity Productscpl.thalesgroup.com HQ: Austin, TX, United StatesReported employees: 1,001-5,000 | Austin, TX, United States | 1,001-5,000 | Exact match | 1,413 contacts → |
“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.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Sangfor Technologiessangfor.com HQ: Shenzhen, ChinaReported employees: 5,001-10,000 | Shenzhen, China | 5,001-10,000 | Exact match | 1,403 contacts → |
“Sangfor Technologies is a global leader in cybersecurity, cloud computing, and IT infrastructure, providing fully integrated and AI-driven solutions.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Guidepoint Securityguidepointsecurity.com HQ: Reston, VA, United StatesReported employees: 1,001-5,000 | Reston, VA, United States | 1,001-5,000 | Exact match | 1,346 contacts → |
“GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | SOS Security LLCsossecurity.com HQ: Parsippany, VA, United StatesReported employees: 10001+ | Parsippany, VA, United States | 10001+ | Exact match | 1,203 contacts → |
“SOS Security is a known innovator and leader in the security and protective services industry.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Impervaimperva.com HQ: Austin, TX, United StatesReported employees: 10001+ | Austin, TX, United States | 10001+ | Exact match | 1,192 contacts → |
“On Dec.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Opswatopswat.com HQ: Tampa, FL, United StatesReported employees: 501-1,000 | Tampa, FL, United States | 501-1,000 | Exact match | 1,192 contacts → |
“OPSWAT protects critical infrastructure.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | HQ: Herndon, VA, United StatesReported employees: 10001+ | Herndon, VA, United States | 10001+ | Exact match | 1,186 contacts → |
“Securitas Critical Infrastructure Services, Inc.(SCIS) is a provider of specialized security and fire services to the highly regulated Nuclear, Aerospace, Defense, Energy, and…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | St. Moritz Security Services, INCsmssi.com HQ: Pittsburgh, PA, United StatesReported employees: 5,001-10,000 | Pittsburgh, PA, United States | 5,001-10,000 | Exact match | 1,168 contacts → |
“Founded in 1982, St.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Seguritechseguritech.com HQ: Mexico City, MexicoReported employees: 1,001-5,000 | Mexico City, Mexico | 1,001-5,000 | Exact match | 1,159 contacts → |
“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.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 17,339 company matches
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Critical infrastructure security firms: dataset insights
November 5, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
17,289 records in the displayed employee bands.
50 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole country list rather than for Worldwide, so it is reported there. Company counts and contact totals on this page are exact for Worldwide, over 17,339 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 5, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Critical infrastructure security firms by location
139 lists · largest firstEvery Critical infrastructure security firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Critical infrastructure security firms based in the United States4,167
- Critical infrastructure security firms based in India1,231
- Critical infrastructure security firms based in the United Kingdom1,058
- Critical infrastructure security firms based in France558
- Critical infrastructure security firms based in Australia552
- Critical infrastructure security firms based in Brazil533
- Critical infrastructure security firms based in Canada499
- Critical infrastructure security firms based in Germany399
- Critical infrastructure security firms based in the United Arab Emirates316
- Critical infrastructure security firms based in the Netherlands288
- Critical infrastructure security firms based in Italy278
- Critical infrastructure security firms based in Spain255
- Critical infrastructure security firms based in Mexico249
- Critical infrastructure security firms based in South Africa227
- Critical infrastructure security firms based in Israel182
- Critical infrastructure security firms based in Türkiye182
- Critical infrastructure security firms based in Saudi Arabia160
- Critical infrastructure security firms based in Colombia158
- Critical infrastructure security firms based in Chile156
- Critical infrastructure security firms based in Switzerland140
- Critical infrastructure security firms based in Pakistan130
- Critical infrastructure security firms based in Belgium127
- Critical infrastructure security firms based in Poland127
- Critical infrastructure security firms based in Argentina124
- Critical infrastructure security firms based in Nigeria120
- Critical infrastructure security firms based in Sweden107
- Critical infrastructure security firms based in Indonesia89
- Critical infrastructure security firms based in Singapore87
- Critical infrastructure security firms based in Romania76
- Critical infrastructure security firms based in New Zealand71
- Critical infrastructure security firms based in Kenya68
- Critical infrastructure security firms based in Morocco68
- Critical infrastructure security firms based in Egypt66
- Critical infrastructure security firms based in Austria62
- Critical infrastructure security firms based in Malaysia62
- Critical infrastructure security firms based in Czechia60
- Critical infrastructure security firms based in Peru60
- Critical infrastructure security firms based in Portugal59
- Critical infrastructure security firms based in Denmark57
- Critical infrastructure security firms based in Ecuador57
- Critical infrastructure security firms based in Qatar55
- Critical infrastructure security firms based in Ireland49
- Critical infrastructure security firms based in Ukraine48
- Critical infrastructure security firms based in Greece47
- Critical infrastructure security firms based in the Philippines47
- Critical infrastructure security firms based in Finland45
- Critical infrastructure security firms based in Thailand41
- Critical infrastructure security firms based in Japan39
- Critical infrastructure security firms based in Slovakia35
- Critical infrastructure security firms based in Bulgaria32
- Critical infrastructure security firms based in Norway31
- Critical infrastructure security firms based in Hungary30
- Critical infrastructure security firms based in Hong Kong28
- Critical infrastructure security firms based in Estonia27
- Critical infrastructure security firms based in Cyprus26
- Critical infrastructure security firms based in Luxembourg26
- Critical infrastructure security firms based in Costa Rica25
- Critical infrastructure security firms based in Jordan25
Cities
- Critical infrastructure security firms based in London, United Kingdom382
- Critical infrastructure security firms based in Dubai, United Arab Emirates191
- Critical infrastructure security firms based in Sao Paulo, Brazil176
- Critical infrastructure security firms based in Paris, France148
- Critical infrastructure security firms based in Bangalore, India138
- Critical infrastructure security firms based in New York, United States127
- Critical infrastructure security firms based in Toronto, Canada107
- Critical infrastructure security firms based in Hyderabad, India105
- Critical infrastructure security firms based in Sydney, Australia102
- Critical infrastructure security firms based in Melbourne, Australia100
- Critical infrastructure security firms based in Pune, India97
- Critical infrastructure security firms based in Riyadh, Saudi Arabia95
- Critical infrastructure security firms based in Houston, United States87
- Critical infrastructure security firms based in Mumbai, India84
- Critical infrastructure security firms based in New Delhi, India82
- Critical infrastructure security firms based in Singapore, Singapore75
- Critical infrastructure security firms based in Chennai, India74
- Critical infrastructure security firms based in Atlanta, United States72
- Critical infrastructure security firms based in Washington, United States71
- Critical infrastructure security firms based in Madrid, Spain70
- Critical infrastructure security firms based in Istanbul, Türkiye67
- Critical infrastructure security firms based in Austin, United States66
- Critical infrastructure security firms based in Miami, United States65
- Critical infrastructure security firms based in Dallas, United States64
- Critical infrastructure security firms based in Nairobi, Kenya61
- Critical infrastructure security firms based in Mexico City, Mexico59
- Critical infrastructure security firms based in Chicago, United States56
- Critical infrastructure security firms based in Tampa, United States56
- Critical infrastructure security firms based in Johannesburg, South Africa53
- Critical infrastructure security firms based in Bogota, Colombia52
- Critical infrastructure security firms based in Buenos Aires, Argentina52
- Critical infrastructure security firms based in Montreal, Canada52
- Critical infrastructure security firms based in Ahmedabad, India51
- Critical infrastructure security firms based in Santiago, Chile51
- Critical infrastructure security firms based in Warsaw, Poland51
- Critical infrastructure security firms based in Gurgaon, India50
- Critical infrastructure security firms based in Tel Aviv, Israel48
- Critical infrastructure security firms based in Noida, India47
- Critical infrastructure security firms based in Los Angeles, United States46
- Critical infrastructure security firms based in Ottawa, Canada46
- Critical infrastructure security firms based in Brisbane, Australia43
- Critical infrastructure security firms based in Charlotte, United States42
- Critical infrastructure security firms based in Stockholm, Sweden42
- Critical infrastructure security firms based in Berlin, Germany41
- Critical infrastructure security firms based in Manchester, United Kingdom40
- Critical infrastructure security firms based in Rio De Janeiro, Brazil40
- Critical infrastructure security firms based in Rome, Italy40
- Critical infrastructure security firms based in Barcelona, Spain39
- Critical infrastructure security firms based in Cairo, Egypt39
- Critical infrastructure security firms based in Columbia, United States39
- Critical infrastructure security firms based in Orlando, United States39
- Critical infrastructure security firms based in San Francisco, United States39
- Critical infrastructure security firms based in Calgary, Canada38
- Critical infrastructure security firms based in Phoenix, United States38
- Critical infrastructure security firms based in Arlington, United States37
- Critical infrastructure security firms based in Denver, United States35
- Critical infrastructure security firms based in Lagos, Nigeria35
- Critical infrastructure security firms based in San Diego, United States35
- Critical infrastructure security firms based in Boston, United States34
- Critical infrastructure security firms based in Bucharest, Romania33
- Critical infrastructure security firms based in Doha, Qatar33
- Critical infrastructure security firms based in Amsterdam, Netherlands32
- Critical infrastructure security firms based in Las Vegas, United States32
- Critical infrastructure security firms based in Perth, Australia31
- Critical infrastructure security firms based in Reston, United States31
- Critical infrastructure security firms based in San Antonio, United States31
- Critical infrastructure security firms based in Ankara, Türkiye30
- Critical infrastructure security firms based in Auckland, New Zealand30
- Critical infrastructure security firms based in Fairfax, United States30
- Critical infrastructure security firms based in Canberra, Australia29
- Critical infrastructure security firms based in Mclean, United States29
- Critical infrastructure security firms based in Prague, Czechia28
- Critical infrastructure security firms based in Quito, Ecuador28
- Critical infrastructure security firms based in Sheridan, United States28
- Critical infrastructure security firms based in Baltimore, United States27
- Critical infrastructure security firms based in Kyiv, Ukraine27
- Critical infrastructure security firms based in Abu Dhabi, United Arab Emirates26
- Critical infrastructure security firms based in Munich, Germany26
- Critical infrastructure security firms based in Alexandria, United States25
- Critical infrastructure security firms based in Cape Town, South Africa25
- Critical infrastructure security firms based in Jakarta, Indonesia25
Questions about this company list
What does Exact match mean for critical infrastructure security firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many critical infrastructure security firms did RevenueBase find worldwide?
The saved snapshot records 17,339 matching company records, 371,486 tracked contacts and 87,289 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 5, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
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Cite this list
RevenueBase Data Team. Top 25 critical infrastructure security firms worldwide. Snapshot: November 5, 2026. https://revenuebase.ai/companies/browse/critical-infrastructure-security-firms.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗