Company lists · Data refreshed September 2026
Top 25 Critical infrastructure security services worldwide
RevenueBase identified 12,076 company matches for critical infrastructure security services worldwide as of September 2026 and tracks 264,935 professional contacts across them, including 47,791 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 services 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 September 27, 2026. Country and city lists for critical infrastructure security services 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 services worldwide
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 38,634 contacts → | ||||
Exact match “Securitas knows Security.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 2 | 12,771 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 3 | 3,620 contacts → | ||||
Exact match “Securitas, Soluciones de Seguridad a medida Nuestro liderazgo en conocimientos de seguridad nos ha permitido desarrollar una estrategia basada en tres pilares fundamentales…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 4 | 3,592 contacts → | ||||
Exact match “U.S.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 5 | 3,387 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 · Sep 27, 2026 · View company records in RevenueBase | |||||
| 6 | 3,004 contacts → | ||||
Exact match “Securitas is a global knowledge leader in security.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 7 | 2,407 contacts → | ||||
Exact match “Telent designs, builds, manages, and maintains the nation’s critical infrastructure technology that keeps the country moving, connected, and safe.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 8 | 2,222 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 · Sep 27, 2026 · View company records in RevenueBase | |||||
| 9 | 2,025 contacts → | ||||
Exact match “Crisis24, a GardaWorld company, is widely regarded as the leading integrated risk management, crisis response, consulting, and global protective solutions firm, serving the…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 10 | 1,949 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 · Sep 27, 2026 · View company records in RevenueBase | |||||
| 11 | 1,632 contacts → | ||||
Exact match “Over 90 years of protecting the things that matter, we’ve seen more than most.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 12 | 1,455 contacts → | ||||
Exact match “ICTS Europe is Europe’s leading security specialist.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 13 | 1,437 contacts → | ||||
Exact match “With offices in the UK and Australia, Frazer-Nash is a leading systems, engineering and technology company.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 14 | 1,431 contacts → | ||||
Exact match “Airbus Protect is an Airbus subsidiary bringing together expertise in cybersecurity, safety and sustainability-related services.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 15 | 1,419 contacts → | ||||
Exact match “See a different world.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 16 | 1,378 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 · Sep 27, 2026 · View company records in RevenueBase | |||||
| 17 | 1,375 contacts → | ||||
Exact match “Guardsmark, LLC provides security services.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 18 | 1,374 contacts → | ||||
Exact match “First Security Group LLC was founded in 2004 with the vision of His Highness, the Vice President, Prime Minister, and Ruler of Dubai, Sheikh Mohamed bin Rashid Al Maktoum.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 19 | 1,361 contacts → | ||||
Exact match “O Grupo Comando G8 é referência nacional na implantação e operação de soluções integradas em segurança e serviços.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 20 | 1,340 contacts → | ||||
Exact match “At Imvula Quality Protection, we don’t just provide security, we create peace of mind.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 21 | 1,232 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 · Sep 27, 2026 · View company records in RevenueBase | |||||
| 22 | 1,175 contacts → | ||||
Exact match “IEM is a professional services firm dedicated to building a safe, secure, and resilient world.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 23 | 1,151 contacts → | ||||
Exact match “SOS Security is a known innovator and leader in the security and protective services industry.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 24 | 1,062 contacts → | ||||
Exact match “Founded in 1982, St.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 25 | 1,050 contacts → | ||||
Exact match “Brosnan Risk Consultants, Ltd.(BRC) is a security risk management firm focusing on physical security, emergency security, disaster preparedness and recovery and management…” Recorded in the RevenueBase company graph · Sep 27, 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 services”. 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 12,076 critical infrastructure security services worldwide
See the full list, filter by size, metro and specialty, and access 47,791 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Critical infrastructure security services worldwide at a glance
As of Sep 27, 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 services are linked below.
- What qualifies
- Company records worldwide whose business descriptions match “critical infrastructure security services” 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 47,791 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 September 27, 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 services by location
84 lists · largest firstEvery Critical infrastructure security services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Critical infrastructure security services based in the United States2,925
- Critical infrastructure security services based in the United Kingdom726
- Critical infrastructure security services based in India555
- Critical infrastructure security services based in Brazil479
- Critical infrastructure security services based in France476
- Critical infrastructure security services based in Germany380
- Critical infrastructure security services based in Australia376
- Critical infrastructure security services based in Canada372
- Critical infrastructure security services based in Mexico234
- Critical infrastructure security services based in the Netherlands208
- Critical infrastructure security services based in Italy190
- Critical infrastructure security services based in the United Arab Emirates184
- Critical infrastructure security services based in Spain173
- Critical infrastructure security services based in South Africa154
- Critical infrastructure security services based in Colombia128
- Critical infrastructure security services based in Switzerland125
- Critical infrastructure security services based in Israel123
- Critical infrastructure security services based in Sweden120
- Critical infrastructure security services based in Argentina117
- Critical infrastructure security services based in Chile117
- Critical infrastructure security services based in Türkiye113
- Critical infrastructure security services based in Poland93
- Critical infrastructure security services based in Belgium85
- Critical infrastructure security services based in Peru78
- Critical infrastructure security services based in Nigeria68
- Critical infrastructure security services based in Saudi Arabia66
- Critical infrastructure security services based in Indonesia57
- Critical infrastructure security services based in Egypt49
- Critical infrastructure security services based in New Zealand46
- Critical infrastructure security services based in Austria45
- Critical infrastructure security services based in Greece45
- Critical infrastructure security services based in Czechia44
- Critical infrastructure security services based in Malaysia44
- Critical infrastructure security services based in Denmark43
- Critical infrastructure security services based in Kenya43
- Critical infrastructure security services based in Ecuador40
- Critical infrastructure security services based in Portugal40
- Critical infrastructure security services based in Ireland36
- Critical infrastructure security services based in the Philippines31
- Critical infrastructure security services based in Qatar30
- Critical infrastructure security services based in Finland26
Cities
- Critical infrastructure security services based in London, United Kingdom241
- Critical infrastructure security services based in Sao Paulo, Brazil155
- Critical infrastructure security services based in Paris, France113
- Critical infrastructure security services based in Dubai, United Arab Emirates103
- Critical infrastructure security services based in New York, United States86
- Critical infrastructure security services based in Toronto, Canada76
- Critical infrastructure security services based in Melbourne, Australia75
- Critical infrastructure security services based in Bangalore, India69
- Critical infrastructure security services based in Washington, United States68
- Critical infrastructure security services based in Houston, United States66
- Critical infrastructure security services based in Sydney, Australia66
- Critical infrastructure security services based in Stockholm, Sweden52
- Critical infrastructure security services based in Atlanta, United States46
- Critical infrastructure security services based in Los Angeles, United States45
- Critical infrastructure security services based in Miami, United States45
- Critical infrastructure security services based in Rio De Janeiro, Brazil45
- Critical infrastructure security services based in Hyderabad, India43
- Critical infrastructure security services based in Mumbai, India43
- Critical infrastructure security services based in Dallas, United States42
- Critical infrastructure security services based in Madrid, Spain42
- Critical infrastructure security services based in Austin, United States40
- Critical infrastructure security services based in Chicago, United States39
- Critical infrastructure security services based in Nairobi, Kenya39
- Critical infrastructure security services based in Johannesburg, South Africa38
- Critical infrastructure security services based in Berlin, Germany37
- Critical infrastructure security services based in Calgary, Canada35
- Critical infrastructure security services based in Ottawa, Canada35
- Critical infrastructure security services based in Pune, India35
- Critical infrastructure security services based in Brisbane, Australia34
- Critical infrastructure security services based in Montreal, Canada34
- Critical infrastructure security services based in Tampa, United States34
- Critical infrastructure security services based in Chennai, India33
- Critical infrastructure security services based in Riyadh, Saudi Arabia33
- Critical infrastructure security services based in Santiago, Chile31
- Critical infrastructure security services based in Charlotte, United States29
- Critical infrastructure security services based in Tel Aviv, Israel28
- Critical infrastructure security services based in Arlington, United States27
- Critical infrastructure security services based in Barcelona, Spain27
- Critical infrastructure security services based in Denver, United States27
- Critical infrastructure security services based in San Francisco, United States27
- Critical infrastructure security services based in Ahmedabad, India26
- Critical infrastructure security services based in Phoenix, United States26
- Critical infrastructure security services based in Warsaw, Poland25
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 services”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many critical infrastructure security services are there worldwide?
RevenueBase identified 12,076 company matches for critical infrastructure security services worldwide as of September 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 services?
The United States leads with 2,925 companies, followed by the United Kingdom (726) and India (555). Every critical infrastructure security services list by country and city is linked on this page.
Which city has the most critical infrastructure security services?
London leads with 243 company records, followed by Sao Paulo (155) and Paris (113).
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 47,791 professional contacts with verified work emails tracked across these 12,076 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 September 27, 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 services worldwide
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 12,076 matching company records for critical infrastructure security services worldwide, with 264,935 tracked contacts and 47,791 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: September 27, 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 services 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, NJ, United StatesReported employees: 10001+ | Parsippany, NJ, United States | 10001+ | Exact match | 38,634 contacts → |
“Securitas knows Security.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Private Sectorlockervault.com HQ: United StatesReported employees: Not recorded | United States | Not recorded | Exact match | 12,771 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 3 |  Securitas Seguridad Españasecuritas.esHQ: Madrid, SpainReported employees: 10001+ | Madrid, Spain | 10001+ | Exact match | 3,620 contacts → |
“Securitas, Soluciones de Seguridad a medida Nuestro liderazgo en conocimientos de seguridad nos ha permitido desarrollar una estrategia basada en tres pilares fundamentales…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  U.S. Security Associates, INCussecurityassociates.comHQ: Roswell, GA, United StatesReported employees: 10001+ | Roswell, GA, United States | 10001+ | Exact match | 3,592 contacts → |
“U.S.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Sicuritalia S.P.Asicuritalia.itHQ: Milano, ItalyReported employees: 10001+ | Milano, Italy | 10001+ | Exact match | 3,387 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 · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Securitas Sverige ABsecuritas.seHQ: Stockholm, SwedenReported employees: 5,001-10,000 | Stockholm, Sweden | 5,001-10,000 | Exact match | 3,004 contacts → |
“Securitas is a global knowledge leader in security.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Telent Technology Services LTDtelent.com HQ: Warwick, United KingdomReported employees: 1,001-5,000 | Warwick, United Kingdom | 1,001-5,000 | Exact match | 2,407 contacts → |
“Telent designs, builds, manages, and maintains the nation’s critical infrastructure technology that keeps the country moving, connected, and safe.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  OPTIVoptiv.comHQ: Leawood, KS, United StatesReported employees: 1,001-5,000 | Leawood, KS, United States | 1,001-5,000 | Exact match | 2,222 contacts → |
“Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Crisis24crisis24.comHQ: Annapolis, MD, United StatesReported employees: 1,001-5,000 | Annapolis, MD, United States | 1,001-5,000 | Exact match | 2,025 contacts → |
“Crisis24, a GardaWorld company, is widely regarded as the leading integrated risk management, crisis response, consulting, and global protective solutions firm, serving the…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Paragon Systems INCparasys.comHQ: Herndon, VA, United StatesReported employees: 10001+ | Herndon, VA, United States | 10001+ | Exact match | 1,949 contacts → |
“Paragon Systems employs over 10,500 professionals in specialized operations providing security, fire, investigations, inspections, cybersecurity, risk management, and mission…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Securitas Canadasecuritas.caHQ: North York, ON, CanadaReported employees: 5,001-10,000 | North York, ON, Canada | 5,001-10,000 | Exact match | 1,632 contacts → |
“Over 90 years of protecting the things that matter, we’ve seen more than most.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Icts Europeictseurope.comHQ: Bp12936, FranceReported employees: 10001+ | Bp12936, France | 10001+ | Exact match | 1,455 contacts → |
“ICTS Europe is Europe’s leading security specialist.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Frazer-Nash Consultancyfnc.co.ukHQ: Leatherhead, United KingdomReported employees: 1,001-5,000 | Leatherhead, United Kingdom | 1,001-5,000 | Exact match | 1,437 contacts → |
“With offices in the UK and Australia, Frazer-Nash is a leading systems, engineering and technology company.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Airbus Protectprotect.airbus.comHQ: Blagnac, FranceReported employees: 1,001-5,000 | Blagnac, France | 1,001-5,000 | Exact match | 1,431 contacts → |
“Airbus Protect is an Airbus subsidiary bringing together expertise in cybersecurity, safety and sustainability-related services.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Securitas Belgiumsecuritas.beHQ: Diegem, BelgiumReported employees: 5,001-10,000 | Diegem, Belgium | 5,001-10,000 | Exact match | 1,419 contacts → |
“See a different world.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Site سايتsite.saHQ: Al Nakheel, Saudi ArabiaReported employees: 501-1,000 | Al Nakheel, Saudi Arabia | 501-1,000 | Exact match | 1,378 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 · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Guardsmarkguardsmark.comHQ: New York, NY, United StatesReported employees: 10001+ | New York, NY, United States | 10001+ | Exact match | 1,375 contacts → |
“Guardsmark, LLC provides security services.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  First Security Group LLCfirstsg.comHQ: Dubai, United Arab EmiratesReported employees: 5,001-10,000 | Dubai, United Arab Emirates | 5,001-10,000 | Exact match | 1,374 contacts → |
“First Security Group LLC was founded in 2004 with the vision of His Highness, the Vice President, Prime Minister, and Ruler of Dubai, Sheikh Mohamed bin Rashid Al Maktoum.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Comando G8comandog8.com.brHQ: São Paulo, BrazilReported employees: 5,001-10,000 | São Paulo, Brazil | 5,001-10,000 | Exact match | 1,361 contacts → |
“O Grupo Comando G8 é referência nacional na implantação e operação de soluções integradas em segurança e serviços.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Imvula Quality Protectionimvula.netHQ: Woodmead, South AfricaReported employees: 10001+ | Woodmead, South Africa | 10001+ | Exact match | 1,340 contacts → |
“At Imvula Quality Protection, we don’t just provide security, we create peace of mind.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Guidepoint Securityguidepointsecurity.comHQ: Reston, VA, United StatesReported employees: 1,001-5,000 | Reston, VA, United States | 1,001-5,000 | Exact match | 1,232 contacts → |
“GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  IEMiem.comHQ: Morrisville, NC, United StatesReported employees: 501-1,000 | Morrisville, NC, United States | 501-1,000 | Exact match | 1,175 contacts → |
“IEM is a professional services firm dedicated to building a safe, secure, and resilient world.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  SOS Security LLCsossecurity.comHQ: Parsippany, NJ, United StatesReported employees: 10001+ | Parsippany, NJ, United States | 10001+ | Exact match | 1,151 contacts → |
“SOS Security is a known innovator and leader in the security and protective services industry.” Recorded description excerpt · September 27, 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 | 1,062 contacts → |
“Founded in 1982, St.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  Brosnan Risk Consultantsbrosnanrisk.comHQ: Pearl River, NY, United StatesReported employees: 5,001-10,000 | Pearl River, NY, United States | 5,001-10,000 | Exact match | 1,050 contacts → |
“Brosnan Risk Consultants, Ltd.(BRC) is a security risk management firm focusing on physical security, emergency security, disaster preparedness and recovery and management…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 12,076 company matches
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Critical infrastructure security services: dataset insights
September 27, 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
12,049 records in the displayed employee bands.
27 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 12,076 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: September 27, 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 services by location
84 lists · largest firstEvery Critical infrastructure security services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Critical infrastructure security services based in the United States2,925
- Critical infrastructure security services based in the United Kingdom726
- Critical infrastructure security services based in India555
- Critical infrastructure security services based in Brazil479
- Critical infrastructure security services based in France476
- Critical infrastructure security services based in Germany380
- Critical infrastructure security services based in Australia376
- Critical infrastructure security services based in Canada372
- Critical infrastructure security services based in Mexico234
- Critical infrastructure security services based in the Netherlands208
- Critical infrastructure security services based in Italy190
- Critical infrastructure security services based in the United Arab Emirates184
- Critical infrastructure security services based in Spain173
- Critical infrastructure security services based in South Africa154
- Critical infrastructure security services based in Colombia128
- Critical infrastructure security services based in Switzerland125
- Critical infrastructure security services based in Israel123
- Critical infrastructure security services based in Sweden120
- Critical infrastructure security services based in Argentina117
- Critical infrastructure security services based in Chile117
- Critical infrastructure security services based in Türkiye113
- Critical infrastructure security services based in Poland93
- Critical infrastructure security services based in Belgium85
- Critical infrastructure security services based in Peru78
- Critical infrastructure security services based in Nigeria68
- Critical infrastructure security services based in Saudi Arabia66
- Critical infrastructure security services based in Indonesia57
- Critical infrastructure security services based in Egypt49
- Critical infrastructure security services based in New Zealand46
- Critical infrastructure security services based in Austria45
- Critical infrastructure security services based in Greece45
- Critical infrastructure security services based in Czechia44
- Critical infrastructure security services based in Malaysia44
- Critical infrastructure security services based in Denmark43
- Critical infrastructure security services based in Kenya43
- Critical infrastructure security services based in Ecuador40
- Critical infrastructure security services based in Portugal40
- Critical infrastructure security services based in Ireland36
- Critical infrastructure security services based in the Philippines31
- Critical infrastructure security services based in Qatar30
- Critical infrastructure security services based in Finland26
Cities
- Critical infrastructure security services based in London, United Kingdom241
- Critical infrastructure security services based in Sao Paulo, Brazil155
- Critical infrastructure security services based in Paris, France113
- Critical infrastructure security services based in Dubai, United Arab Emirates103
- Critical infrastructure security services based in New York, United States86
- Critical infrastructure security services based in Toronto, Canada76
- Critical infrastructure security services based in Melbourne, Australia75
- Critical infrastructure security services based in Bangalore, India69
- Critical infrastructure security services based in Washington, United States68
- Critical infrastructure security services based in Houston, United States66
- Critical infrastructure security services based in Sydney, Australia66
- Critical infrastructure security services based in Stockholm, Sweden52
- Critical infrastructure security services based in Atlanta, United States46
- Critical infrastructure security services based in Los Angeles, United States45
- Critical infrastructure security services based in Miami, United States45
- Critical infrastructure security services based in Rio De Janeiro, Brazil45
- Critical infrastructure security services based in Hyderabad, India43
- Critical infrastructure security services based in Mumbai, India43
- Critical infrastructure security services based in Dallas, United States42
- Critical infrastructure security services based in Madrid, Spain42
- Critical infrastructure security services based in Austin, United States40
- Critical infrastructure security services based in Chicago, United States39
- Critical infrastructure security services based in Nairobi, Kenya39
- Critical infrastructure security services based in Johannesburg, South Africa38
- Critical infrastructure security services based in Berlin, Germany37
- Critical infrastructure security services based in Calgary, Canada35
- Critical infrastructure security services based in Ottawa, Canada35
- Critical infrastructure security services based in Pune, India35
- Critical infrastructure security services based in Brisbane, Australia34
- Critical infrastructure security services based in Montreal, Canada34
- Critical infrastructure security services based in Tampa, United States34
- Critical infrastructure security services based in Chennai, India33
- Critical infrastructure security services based in Riyadh, Saudi Arabia33
- Critical infrastructure security services based in Santiago, Chile31
- Critical infrastructure security services based in Charlotte, United States29
- Critical infrastructure security services based in Tel Aviv, Israel28
- Critical infrastructure security services based in Arlington, United States27
- Critical infrastructure security services based in Barcelona, Spain27
- Critical infrastructure security services based in Denver, United States27
- Critical infrastructure security services based in San Francisco, United States27
- Critical infrastructure security services based in Ahmedabad, India26
- Critical infrastructure security services based in Phoenix, United States26
- Critical infrastructure security services based in Warsaw, Poland25
Questions about this company list
What does Exact match mean for critical infrastructure security services?
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 services did RevenueBase find worldwide?
The saved snapshot records 12,076 matching company records, 264,935 tracked contacts and 47,791 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: September 27, 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 services worldwide. Snapshot: September 27, 2026. https://revenuebase.ai/companies/browse/critical-infrastructure-security-services.
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 services worldwide
RevenueBase records 12,076 matching company records for critical infrastructure security services worldwide, with 264,935 tracked contacts and 47,791 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: September 27, 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 services 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, NJ, United StatesReported employees: 10001+ | Parsippany, NJ, United States | 10001+ | Exact match | 38,634 contacts → |
“Securitas knows Security.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Private Sectorlockervault.com HQ: United StatesReported employees: Not recorded | United States | Not recorded | Exact match | 12,771 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 3 | Securitas Seguridad Españasecuritas.es HQ: Madrid, SpainReported employees: 10001+ | Madrid, Spain | 10001+ | Exact match | 3,620 contacts → |
“Securitas, Soluciones de Seguridad a medida Nuestro liderazgo en conocimientos de seguridad nos ha permitido desarrollar una estrategia basada en tres pilares fundamentales…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | U.S. Security Associates, INCussecurityassociates.com HQ: Roswell, GA, United StatesReported employees: 10001+ | Roswell, GA, United States | 10001+ | Exact match | 3,592 contacts → |
“U.S.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Sicuritalia S.P.Asicuritalia.it HQ: Milano, ItalyReported employees: 10001+ | Milano, Italy | 10001+ | Exact match | 3,387 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 · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Securitas Sverige ABsecuritas.se HQ: Stockholm, SwedenReported employees: 5,001-10,000 | Stockholm, Sweden | 5,001-10,000 | Exact match | 3,004 contacts → |
“Securitas is a global knowledge leader in security.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Telent Technology Services LTDtelent.com HQ: Warwick, United KingdomReported employees: 1,001-5,000 | Warwick, United Kingdom | 1,001-5,000 | Exact match | 2,407 contacts → |
“Telent designs, builds, manages, and maintains the nation’s critical infrastructure technology that keeps the country moving, connected, and safe.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | OPTIVoptiv.com HQ: Leawood, KS, United StatesReported employees: 1,001-5,000 | Leawood, KS, United States | 1,001-5,000 | Exact match | 2,222 contacts → |
“Optiv is the cyber advisory and solutions leader, delivering strategic and technical expertise to nearly companies across every major industry.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Crisis24crisis24.com HQ: Annapolis, MD, United StatesReported employees: 1,001-5,000 | Annapolis, MD, United States | 1,001-5,000 | Exact match | 2,025 contacts → |
“Crisis24, a GardaWorld company, is widely regarded as the leading integrated risk management, crisis response, consulting, and global protective solutions firm, serving the…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Paragon Systems INCparasys.com HQ: Herndon, VA, United StatesReported employees: 10001+ | Herndon, VA, United States | 10001+ | Exact match | 1,949 contacts → |
“Paragon Systems employs over 10,500 professionals in specialized operations providing security, fire, investigations, inspections, cybersecurity, risk management, and mission…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Securitas Canadasecuritas.ca HQ: North York, ON, CanadaReported employees: 5,001-10,000 | North York, ON, Canada | 5,001-10,000 | Exact match | 1,632 contacts → |
“Over 90 years of protecting the things that matter, we’ve seen more than most.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Icts Europeictseurope.com HQ: Bp12936, FranceReported employees: 10001+ | Bp12936, France | 10001+ | Exact match | 1,455 contacts → |
“ICTS Europe is Europe’s leading security specialist.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Frazer-Nash Consultancyfnc.co.uk HQ: Leatherhead, United KingdomReported employees: 1,001-5,000 | Leatherhead, United Kingdom | 1,001-5,000 | Exact match | 1,437 contacts → |
“With offices in the UK and Australia, Frazer-Nash is a leading systems, engineering and technology company.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Airbus Protectprotect.airbus.com HQ: Blagnac, FranceReported employees: 1,001-5,000 | Blagnac, France | 1,001-5,000 | Exact match | 1,431 contacts → |
“Airbus Protect is an Airbus subsidiary bringing together expertise in cybersecurity, safety and sustainability-related services.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Securitas Belgiumsecuritas.be HQ: Diegem, BelgiumReported employees: 5,001-10,000 | Diegem, Belgium | 5,001-10,000 | Exact match | 1,419 contacts → |
“See a different world.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Site سايتsite.sa HQ: Al Nakheel, Saudi ArabiaReported employees: 501-1,000 | Al Nakheel, Saudi Arabia | 501-1,000 | Exact match | 1,378 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 · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Guardsmarkguardsmark.com HQ: New York, NY, United StatesReported employees: 10001+ | New York, NY, United States | 10001+ | Exact match | 1,375 contacts → |
“Guardsmark, LLC provides security services.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | First Security Group LLCfirstsg.com HQ: Dubai, United Arab EmiratesReported employees: 5,001-10,000 | Dubai, United Arab Emirates | 5,001-10,000 | Exact match | 1,374 contacts → |
“First Security Group LLC was founded in 2004 with the vision of His Highness, the Vice President, Prime Minister, and Ruler of Dubai, Sheikh Mohamed bin Rashid Al Maktoum.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Comando G8comandog8.com.br HQ: São Paulo, BrazilReported employees: 5,001-10,000 | São Paulo, Brazil | 5,001-10,000 | Exact match | 1,361 contacts → |
“O Grupo Comando G8 é referência nacional na implantação e operação de soluções integradas em segurança e serviços.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Imvula Quality Protectionimvula.net HQ: Woodmead, South AfricaReported employees: 10001+ | Woodmead, South Africa | 10001+ | Exact match | 1,340 contacts → |
“At Imvula Quality Protection, we don’t just provide security, we create peace of mind.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Guidepoint Securityguidepointsecurity.com HQ: Reston, VA, United StatesReported employees: 1,001-5,000 | Reston, VA, United States | 1,001-5,000 | Exact match | 1,232 contacts → |
“GuidePoint Security provides trusted cybersecurity expertise, solutions, and services that help organizations make informed decisions and minimize risk.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | IEMiem.com HQ: Morrisville, NC, United StatesReported employees: 501-1,000 | Morrisville, NC, United States | 501-1,000 | Exact match | 1,175 contacts → |
“IEM is a professional services firm dedicated to building a safe, secure, and resilient world.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | SOS Security LLCsossecurity.com HQ: Parsippany, NJ, United StatesReported employees: 10001+ | Parsippany, NJ, United States | 10001+ | Exact match | 1,151 contacts → |
“SOS Security is a known innovator and leader in the security and protective services industry.” Recorded description excerpt · September 27, 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 | 1,062 contacts → |
“Founded in 1982, St.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Brosnan Risk Consultantsbrosnanrisk.com HQ: Pearl River, NY, United StatesReported employees: 5,001-10,000 | Pearl River, NY, United States | 5,001-10,000 | Exact match | 1,050 contacts → |
“Brosnan Risk Consultants, Ltd.(BRC) is a security risk management firm focusing on physical security, emergency security, disaster preparedness and recovery and management…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 12,076 company matches
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Critical infrastructure security services: dataset insights
September 27, 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
12,049 records in the displayed employee bands.
27 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 12,076 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: September 27, 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 services by location
84 lists · largest firstEvery Critical infrastructure security services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.
Countries
- Critical infrastructure security services based in the United States2,925
- Critical infrastructure security services based in the United Kingdom726
- Critical infrastructure security services based in India555
- Critical infrastructure security services based in Brazil479
- Critical infrastructure security services based in France476
- Critical infrastructure security services based in Germany380
- Critical infrastructure security services based in Australia376
- Critical infrastructure security services based in Canada372
- Critical infrastructure security services based in Mexico234
- Critical infrastructure security services based in the Netherlands208
- Critical infrastructure security services based in Italy190
- Critical infrastructure security services based in the United Arab Emirates184
- Critical infrastructure security services based in Spain173
- Critical infrastructure security services based in South Africa154
- Critical infrastructure security services based in Colombia128
- Critical infrastructure security services based in Switzerland125
- Critical infrastructure security services based in Israel123
- Critical infrastructure security services based in Sweden120
- Critical infrastructure security services based in Argentina117
- Critical infrastructure security services based in Chile117
- Critical infrastructure security services based in Türkiye113
- Critical infrastructure security services based in Poland93
- Critical infrastructure security services based in Belgium85
- Critical infrastructure security services based in Peru78
- Critical infrastructure security services based in Nigeria68
- Critical infrastructure security services based in Saudi Arabia66
- Critical infrastructure security services based in Indonesia57
- Critical infrastructure security services based in Egypt49
- Critical infrastructure security services based in New Zealand46
- Critical infrastructure security services based in Austria45
- Critical infrastructure security services based in Greece45
- Critical infrastructure security services based in Czechia44
- Critical infrastructure security services based in Malaysia44
- Critical infrastructure security services based in Denmark43
- Critical infrastructure security services based in Kenya43
- Critical infrastructure security services based in Ecuador40
- Critical infrastructure security services based in Portugal40
- Critical infrastructure security services based in Ireland36
- Critical infrastructure security services based in the Philippines31
- Critical infrastructure security services based in Qatar30
- Critical infrastructure security services based in Finland26
Cities
- Critical infrastructure security services based in London, United Kingdom241
- Critical infrastructure security services based in Sao Paulo, Brazil155
- Critical infrastructure security services based in Paris, France113
- Critical infrastructure security services based in Dubai, United Arab Emirates103
- Critical infrastructure security services based in New York, United States86
- Critical infrastructure security services based in Toronto, Canada76
- Critical infrastructure security services based in Melbourne, Australia75
- Critical infrastructure security services based in Bangalore, India69
- Critical infrastructure security services based in Washington, United States68
- Critical infrastructure security services based in Houston, United States66
- Critical infrastructure security services based in Sydney, Australia66
- Critical infrastructure security services based in Stockholm, Sweden52
- Critical infrastructure security services based in Atlanta, United States46
- Critical infrastructure security services based in Los Angeles, United States45
- Critical infrastructure security services based in Miami, United States45
- Critical infrastructure security services based in Rio De Janeiro, Brazil45
- Critical infrastructure security services based in Hyderabad, India43
- Critical infrastructure security services based in Mumbai, India43
- Critical infrastructure security services based in Dallas, United States42
- Critical infrastructure security services based in Madrid, Spain42
- Critical infrastructure security services based in Austin, United States40
- Critical infrastructure security services based in Chicago, United States39
- Critical infrastructure security services based in Nairobi, Kenya39
- Critical infrastructure security services based in Johannesburg, South Africa38
- Critical infrastructure security services based in Berlin, Germany37
- Critical infrastructure security services based in Calgary, Canada35
- Critical infrastructure security services based in Ottawa, Canada35
- Critical infrastructure security services based in Pune, India35
- Critical infrastructure security services based in Brisbane, Australia34
- Critical infrastructure security services based in Montreal, Canada34
- Critical infrastructure security services based in Tampa, United States34
- Critical infrastructure security services based in Chennai, India33
- Critical infrastructure security services based in Riyadh, Saudi Arabia33
- Critical infrastructure security services based in Santiago, Chile31
- Critical infrastructure security services based in Charlotte, United States29
- Critical infrastructure security services based in Tel Aviv, Israel28
- Critical infrastructure security services based in Arlington, United States27
- Critical infrastructure security services based in Barcelona, Spain27
- Critical infrastructure security services based in Denver, United States27
- Critical infrastructure security services based in San Francisco, United States27
- Critical infrastructure security services based in Ahmedabad, India26
- Critical infrastructure security services based in Phoenix, United States26
- Critical infrastructure security services based in Warsaw, Poland25
Questions about this company list
What does Exact match mean for critical infrastructure security services?
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 services did RevenueBase find worldwide?
The saved snapshot records 12,076 matching company records, 264,935 tracked contacts and 47,791 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: September 27, 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 services worldwide. Snapshot: September 27, 2026. https://revenuebase.ai/companies/browse/critical-infrastructure-security-services.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗