Company lists · Data refreshed November 2026
Top 22 Critical infrastructure protection contractors based in Australia
RevenueBase identified 629 company matches for critical infrastructure protection contractors associated with Australia as of November 2026 and tracks 9,653 professional contacts across them, including 2,968 with verified work emails. Melbourne is the largest hub.
This list covers company matches for critical infrastructure protection contractors associated with Australia, 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 6, 2026.
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 22 largest critical infrastructure protection contractors based in Australia
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,964 contacts → | ||||
Exact match “At Wilson Security, we are committed to building a safer future for everyone.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 2 | 558 contacts → | ||||
Exact match “Founded in 1923, SNP is one of Australia’s leading security services providers with over 2,500 employees nationwide.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 3 | 376 contacts → | ||||
Exact match “AC3 is a leading Australian-owned and operated technology services provider helping organisations across government, healthcare, financial services, and critical infrastructure…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 4 | 242 contacts → | ||||
Exact match “We know how to offer the most effective security to our customers.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 5 | 196 contacts → | ||||
Exact match “For more than 130 years, we have stood alongside our community, protecting homes, families, businesses, and communities.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 6 | 177 contacts → | ||||
Exact match “Corporate Protection is an international organisation with over 20 years experience in the critical infrastructure environment.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 7 | 121 contacts → | ||||
Exact match “Triskele Labs is one of Australia’s fastest growing cybersecurity companies.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 8 | 95 contacts → | ||||
Exact match “Established in 2001, ISEC is a leading provider of protective security, safety, risk management, and training services to the corporate, commercial and government sectors.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 9 | 93 contacts → | ||||
Exact match “National Protective Services is a leading professional security company, specialising in the provision of quality and tailored protective services and products to ensure optimum…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 10 | 83 contacts → | ||||
Exact match “Sekuro is a cyber security and digital resiliency solutions provider that helps CIOs and CISOs take a strategic approach to cyber security risk mitigation and building business…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 11 | 81 contacts → | ||||
Exact match “The Risk 2 Solution Group delivers integrated risk, resilience, training, and consulting services to organisations operating in complex and high-consequence environments.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 12 | 75 contacts → | ||||
Exact match “Northbridge is an Australian-owned cybersecurity services provider with more than 25 years’ experience delivering engineered, integrated and fully managed security services to…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 13 | 65 contacts → | ||||
Exact match “Guarding Solutions | Armed Guards | 24/7 Grade A1 Monitoring | Mobile Patrols | Electronics | Advisory EXEC Security is an Australian owned, national company with 20 years of…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 14 | 60 contacts → | ||||
Exact match “Australian owned Advent Security has been a leader in providing exceptional, value-for-money services to local, national and international clients in the public, private and…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 15 | 58 contacts → | ||||
Exact match “Welcome to Fortis Security, founded in September of 2013, Fortis has grown year on year with customer support.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 16 | 57 contacts → | ||||
Exact match “SCG specialises in providing independent security and communications engineering, and security threat and risk consultancy services, to clients operating in challenging security…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 17 | 57 contacts → | ||||
Exact match “IPSec are specialists in information asset and cyber protection; security experts who know how to mitigate cyber risk by assisting in the protection of valuable intelligence…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 18 | 57 contacts → | ||||
Exact match “We help our customers deliver their most complex projects.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 19 | 57 contacts → | ||||
Exact match “Guardian Venue Management International is a proudly Australian-owned company, dedicated to delivering the highest standards of Security Solutions, Customized Protection, Traffic…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 20 | 56 contacts → | ||||
Exact match “Welcome to Vibrant Services.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 21 | 56 contacts → | ||||
Exact match “Combining the very best personnel, processes and technology, Premium Solutions will redefine your expectations of the security industry.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase | |||||
| 22 | 55 contacts → | ||||
Exact match “Established in the year Securcom has 20 years’ experience as a specialist security solution provider.” Recorded in the RevenueBase company graph · Nov 6, 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 protection contractors”. 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 22 of 629 critical infrastructure protection contractors based in Australia
See the full list, filter by size, metro and specialty, and access 2,968 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Critical infrastructure protection contractors based in Australia at a glance
As of Nov 6, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for Australia, so it is reported there. Company counts and contact totals on this page are exact for Australia, over 629 companies.
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.
- What qualifies
- Company records associated with Australia whose business descriptions match “critical infrastructure protection contractors” 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 2,968 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 6, 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 protection contractors by metro
- Critical infrastructure protection contractors in Melbourne123
- Critical infrastructure protection contractors in Sydney109
- Critical infrastructure protection contractors in Brisbane53
- Critical infrastructure protection contractors in Canberra33
- Critical infrastructure protection contractors in Perth32
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 protection contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many critical infrastructure protection contractors are there based in Australia?
RevenueBase identified 629 company matches for critical infrastructure protection contractors associated with Australia 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?
Wilson Security tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most critical infrastructure protection contractors?
Melbourne leads with 123 company records, followed by Sydney (109) and Brisbane (53).
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 2,968 professional contacts with verified work emails tracked across these 629 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 6, 2026.
Ready to reach these companies? Verified emails and direct dials for all 629 critical infrastructure protection contractors based in Australia. Start with a free account, no credit card.
Download this list →Related lists
Critical infrastructure protection contractors by geography
- Critical infrastructure protection contractors based in Buenos Aires, Argentina
- Critical infrastructure protection contractors based in Brisbane, Australia
- Critical infrastructure protection contractors based in Canberra, Australia
- Critical infrastructure protection contractors based in Melbourne, Australia
- Critical infrastructure protection contractors based in Perth, Australia
- Critical infrastructure protection contractors based in Sydney, Australia
- Critical infrastructure protection contractors based in Vienna, Austria
- Critical infrastructure protection contractors based in Belo Horizonte, Brazil
- Critical infrastructure protection contractors based in Rio De Janeiro, Brazil
- Critical infrastructure protection contractors based in Sao Paulo, Brazil
- Critical infrastructure protection contractors based in Calgary, Canada
- Critical infrastructure protection contractors based in Montreal, Canada
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
- All company lists
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- Lists A-Z
- New lists
- Critical infrastructure protection contractors based in Buenos Aires, Argentina
- Critical infrastructure protection contractors based in Brisbane, Australia
- Critical infrastructure protection contractors based in Canberra, Australia
- Critical infrastructure protection contractors based in Melbourne, Australia
- Critical infrastructure protection contractors based in Perth, Australia
- Critical infrastructure protection contractors based in Sydney, Australia
Company intelligence · public preview
Top 22 critical infrastructure protection contractors based in Australia
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 629 matching company records for critical infrastructure protection contractors based in Australia, with 9,653 tracked contacts and 2,968 verified work emails.
This public preview shows 22 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 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 22 critical infrastructure protection contractors based in Australia
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 |  Wilson Securitywilsonsecurity.com.auHQ: Essendon Fields, AustraliaReported employees: 5,001-10,000 | Essendon Fields, Australia | 5,001-10,000 | Exact match | 1,964 contacts → |
“At Wilson Security, we are committed to building a safer future for everyone.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  SNP Securitysnpsecurity.com.auHQ: West Ryde, AustraliaReported employees: 1,001-5,000 | West Ryde, Australia | 1,001-5,000 | Exact match | 558 contacts → |
“Founded in 1923, SNP is one of Australia’s leading security services providers with over 2,500 employees nationwide.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Ac3ac3.com.auHQ: Haymarket, AustraliaReported employees: 201-500 | Haymarket, Australia | 201-500 | Exact match | 376 contacts → |
“AC3 is a leading Australian-owned and operated technology services provider helping organisations across government, healthcare, financial services, and critical infrastructure…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Securitas Australiasecuritas-australia.com.auHQ: Preston, AustraliaReported employees: 10001+ | Preston, Australia | 10001+ | Exact match | 242 contacts → |
“We know how to offer the most effective security to our customers.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  ADT Security Australiaadtsecurity.com.auHQ: Rydalmere, AustraliaReported employees: 501-1,000 | Rydalmere, Australia | 501-1,000 | Exact match | 196 contacts → |
“For more than 130 years, we have stood alongside our community, protecting homes, families, businesses, and communities.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Corporate Protectioncorporateprotect.com.auHQ: Pinkenba, AustraliaReported employees: 201-500 | Pinkenba, Australia | 201-500 | Exact match | 177 contacts → |
“Corporate Protection is an international organisation with over 20 years experience in the critical infrastructure environment.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Triskele Labstriskelelabs.comHQ: Melbourne, AustraliaReported employees: 51-200 | Melbourne, Australia | 51-200 | Exact match | 121 contacts → |
“Triskele Labs is one of Australia’s fastest growing cybersecurity companies.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  ISECisec.com.auHQ: Alexandria, AustraliaReported employees: 201-500 | Alexandria, Australia | 201-500 | Exact match | 95 contacts → |
“Established in 2001, ISEC is a leading provider of protective security, safety, risk management, and training services to the corporate, commercial and government sectors.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  National Protective Servicesnationalprotectiveservices.com.auHQ: South Melbourne, AustraliaReported employees: 1,001-5,000 | South Melbourne, Australia | 1,001-5,000 | Exact match | 93 contacts → |
“National Protective Services is a leading professional security company, specialising in the provision of quality and tailored protective services and products to ensure optimum…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Sekurosekuro.ioHQ: AustraliaReported employees: 51-200 | Australia | 51-200 | Exact match | 83 contacts → |
“Sekuro is a cyber security and digital resiliency solutions provider that helps CIOs and CISOs take a strategic approach to cyber security risk mitigation and building business…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Risk 2 Solution Grouprisk2solution.comHQ: Murarrie, AustraliaReported employees: 11-50 | Murarrie, Australia | 11-50 | Exact match | 81 contacts → |
“The Risk 2 Solution Group delivers integrated risk, resilience, training, and consulting services to organisations operating in complex and high-consequence environments.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Northbridge Systemsnorth-bridge.com.auHQ: Sydney, AustraliaReported employees: 51-200 | Sydney, Australia | 51-200 | Exact match | 75 contacts → |
“Northbridge is an Australian-owned cybersecurity services provider with more than 25 years’ experience delivering engineered, integrated and fully managed security services to…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Exec Securityexecsecurity.com.auHQ: Melbourne, AustraliaReported employees: 501-1,000 | Melbourne, Australia | 501-1,000 | Exact match | 65 contacts → |
“Guarding Solutions | Armed Guards | 24/7 Grade A1 Monitoring | Mobile Patrols | Electronics | Advisory EXEC Security is an Australian owned, national company with 20 years of…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Advent Security Australia & NEW Zealandadventsecurity.com.auHQ: Melbourne, AustraliaReported employees: 501-1,000 | Melbourne, Australia | 501-1,000 | Exact match | 60 contacts → |
“Australian owned Advent Security has been a leader in providing exceptional, value-for-money services to local, national and international clients in the public, private and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Fortis Securityfortissecurity.com.auHQ: Melbourne, AustraliaReported employees: 51-200 | Melbourne, Australia | 51-200 | Exact match | 58 contacts → |
“Welcome to Fortis Security, founded in September of 2013, Fortis has grown year on year with customer support.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Security Consulting Group PTY LTD SCGsecurityconsultinggroup.com.auHQ: Melbourne, AustraliaReported employees: 51-200 | Melbourne, Australia | 51-200 | Exact match | 57 contacts → |
“SCG specialises in providing independent security and communications engineering, and security threat and risk consultancy services, to clients operating in challenging security…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Ipsec PTY LTDipsec.com.auHQ: Cremorne, AustraliaReported employees: 11-50 | Cremorne, Australia | 11-50 | Exact match | 57 contacts → |
“IPSec are specialists in information asset and cyber protection; security experts who know how to mitigate cyber risk by assisting in the protection of valuable intelligence…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Nuffieldnuffieldgroup.comHQ: South Yarra, AustraliaReported employees: 51-200 | South Yarra, Australia | 51-200 | Exact match | 57 contacts → |
“We help our customers deliver their most complex projects.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Guardian Venue Management Internationalguardianvm.com.auHQ: Sydney, AustraliaReported employees: 201-500 | Sydney, Australia | 201-500 | Exact match | 57 contacts → |
“Guardian Venue Management International is a proudly Australian-owned company, dedicated to delivering the highest standards of Security Solutions, Customized Protection, Traffic…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Vibrant Servicesvibrantservices.com.auHQ: Coburg North, AustraliaReported employees: 201-500 | Coburg North, Australia | 201-500 | Exact match | 56 contacts → |
“Welcome to Vibrant Services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Premium Solutionspremiumsolutions.auHQ: Woollahra, AustraliaReported employees: 51-200 | Woollahra, Australia | 51-200 | Exact match | 56 contacts → |
“Combining the very best personnel, processes and technology, Premium Solutions will redefine your expectations of the security industry.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Securcom PTY LTDsecurcom.com.auHQ: Brendale, AustraliaReported employees: 51-200 | Brendale, Australia | 51-200 | Exact match | 55 contacts → |
“Established in the year Securcom has 20 years’ experience as a specialist security solution provider.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 22 of 629 company matches
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Critical infrastructure protection contractors: dataset insights
November 6, 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
623 records in the displayed employee bands.
6 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 worldwide rather than for Australia, so it is reported there. Company counts and contact totals on this page are exact for Australia, over 629 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 6, 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 protection contractors by metro
- Critical infrastructure protection contractors in Melbourne123
- Critical infrastructure protection contractors in Sydney109
- Critical infrastructure protection contractors in Brisbane53
- Critical infrastructure protection contractors in Canberra33
- Critical infrastructure protection contractors in Perth32
Questions about this company list
What does Exact match mean for critical infrastructure protection contractors?
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 protection contractors did RevenueBase find based in Australia?
The saved snapshot records 629 matching company records, 9,653 tracked contacts and 2,968 verified emails. The public preview displays 22 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 6, 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
Critical infrastructure protection contractors by geography
- Critical infrastructure protection contractors based in Buenos Aires, Argentina
- Critical infrastructure protection contractors based in Brisbane, Australia
- Critical infrastructure protection contractors based in Canberra, Australia
- Critical infrastructure protection contractors based in Melbourne, Australia
- Critical infrastructure protection contractors based in Perth, Australia
- Critical infrastructure protection contractors based in Sydney, Australia
- Critical infrastructure protection contractors based in Vienna, Austria
- Critical infrastructure protection contractors based in Belo Horizonte, Brazil
- Critical infrastructure protection contractors based in Rio De Janeiro, Brazil
- Critical infrastructure protection contractors based in Sao Paulo, Brazil
- Critical infrastructure protection contractors based in Calgary, Canada
- Critical infrastructure protection contractors based in Montreal, Canada
Cite this list
RevenueBase Data Team. Top 22 critical infrastructure protection contractors based in Australia. Snapshot: November 6, 2026. https://revenuebase.ai/companies/critical-infrastructure-protection-contractors/australia.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Critical infrastructure protection contractors based in Buenos Aires, Argentina
- Critical infrastructure protection contractors based in Brisbane, Australia
- Critical infrastructure protection contractors based in Canberra, Australia
- Critical infrastructure protection contractors based in Melbourne, Australia
- Critical infrastructure protection contractors based in Perth, Australia
- Critical infrastructure protection contractors based in Sydney, Australia
Company intelligence · public preview
Top 22 critical infrastructure protection contractors based in Australia
RevenueBase records 629 matching company records for critical infrastructure protection contractors based in Australia, with 9,653 tracked contacts and 2,968 verified work emails.
This public preview shows 22 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 6, 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 22 critical infrastructure protection contractors based in Australia
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 | Wilson Securitywilsonsecurity.com.au HQ: Essendon Fields, AustraliaReported employees: 5,001-10,000 | Essendon Fields, Australia | 5,001-10,000 | Exact match | 1,964 contacts → |
“At Wilson Security, we are committed to building a safer future for everyone.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | SNP Securitysnpsecurity.com.au HQ: West Ryde, AustraliaReported employees: 1,001-5,000 | West Ryde, Australia | 1,001-5,000 | Exact match | 558 contacts → |
“Founded in 1923, SNP is one of Australia’s leading security services providers with over 2,500 employees nationwide.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Ac3ac3.com.au HQ: Haymarket, AustraliaReported employees: 201-500 | Haymarket, Australia | 201-500 | Exact match | 376 contacts → |
“AC3 is a leading Australian-owned and operated technology services provider helping organisations across government, healthcare, financial services, and critical infrastructure…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Securitas Australiasecuritas-australia.com.au HQ: Preston, AustraliaReported employees: 10001+ | Preston, Australia | 10001+ | Exact match | 242 contacts → |
“We know how to offer the most effective security to our customers.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | ADT Security Australiaadtsecurity.com.au HQ: Rydalmere, AustraliaReported employees: 501-1,000 | Rydalmere, Australia | 501-1,000 | Exact match | 196 contacts → |
“For more than 130 years, we have stood alongside our community, protecting homes, families, businesses, and communities.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Corporate Protectioncorporateprotect.com.au HQ: Pinkenba, AustraliaReported employees: 201-500 | Pinkenba, Australia | 201-500 | Exact match | 177 contacts → |
“Corporate Protection is an international organisation with over 20 years experience in the critical infrastructure environment.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Triskele Labstriskelelabs.com HQ: Melbourne, AustraliaReported employees: 51-200 | Melbourne, Australia | 51-200 | Exact match | 121 contacts → |
“Triskele Labs is one of Australia’s fastest growing cybersecurity companies.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | ISECisec.com.au HQ: Alexandria, AustraliaReported employees: 201-500 | Alexandria, Australia | 201-500 | Exact match | 95 contacts → |
“Established in 2001, ISEC is a leading provider of protective security, safety, risk management, and training services to the corporate, commercial and government sectors.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | National Protective Servicesnationalprotectiveservices.com.au HQ: South Melbourne, AustraliaReported employees: 1,001-5,000 | South Melbourne, Australia | 1,001-5,000 | Exact match | 93 contacts → |
“National Protective Services is a leading professional security company, specialising in the provision of quality and tailored protective services and products to ensure optimum…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Sekurosekuro.io HQ: AustraliaReported employees: 51-200 | Australia | 51-200 | Exact match | 83 contacts → |
“Sekuro is a cyber security and digital resiliency solutions provider that helps CIOs and CISOs take a strategic approach to cyber security risk mitigation and building business…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Risk 2 Solution Grouprisk2solution.com HQ: Murarrie, AustraliaReported employees: 11-50 | Murarrie, Australia | 11-50 | Exact match | 81 contacts → |
“The Risk 2 Solution Group delivers integrated risk, resilience, training, and consulting services to organisations operating in complex and high-consequence environments.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Northbridge Systemsnorth-bridge.com.au HQ: Sydney, AustraliaReported employees: 51-200 | Sydney, Australia | 51-200 | Exact match | 75 contacts → |
“Northbridge is an Australian-owned cybersecurity services provider with more than 25 years’ experience delivering engineered, integrated and fully managed security services to…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Exec Securityexecsecurity.com.au HQ: Melbourne, AustraliaReported employees: 501-1,000 | Melbourne, Australia | 501-1,000 | Exact match | 65 contacts → |
“Guarding Solutions | Armed Guards | 24/7 Grade A1 Monitoring | Mobile Patrols | Electronics | Advisory EXEC Security is an Australian owned, national company with 20 years of…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Advent Security Australia & NEW Zealandadventsecurity.com.au HQ: Melbourne, AustraliaReported employees: 501-1,000 | Melbourne, Australia | 501-1,000 | Exact match | 60 contacts → |
“Australian owned Advent Security has been a leader in providing exceptional, value-for-money services to local, national and international clients in the public, private and…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Fortis Securityfortissecurity.com.au HQ: Melbourne, AustraliaReported employees: 51-200 | Melbourne, Australia | 51-200 | Exact match | 58 contacts → |
“Welcome to Fortis Security, founded in September of 2013, Fortis has grown year on year with customer support.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Security Consulting Group PTY LTD SCGsecurityconsultinggroup.com.au HQ: Melbourne, AustraliaReported employees: 51-200 | Melbourne, Australia | 51-200 | Exact match | 57 contacts → |
“SCG specialises in providing independent security and communications engineering, and security threat and risk consultancy services, to clients operating in challenging security…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Ipsec PTY LTDipsec.com.au HQ: Cremorne, AustraliaReported employees: 11-50 | Cremorne, Australia | 11-50 | Exact match | 57 contacts → |
“IPSec are specialists in information asset and cyber protection; security experts who know how to mitigate cyber risk by assisting in the protection of valuable intelligence…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Nuffieldnuffieldgroup.com HQ: South Yarra, AustraliaReported employees: 51-200 | South Yarra, Australia | 51-200 | Exact match | 57 contacts → |
“We help our customers deliver their most complex projects.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Guardian Venue Management Internationalguardianvm.com.au HQ: Sydney, AustraliaReported employees: 201-500 | Sydney, Australia | 201-500 | Exact match | 57 contacts → |
“Guardian Venue Management International is a proudly Australian-owned company, dedicated to delivering the highest standards of Security Solutions, Customized Protection, Traffic…” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Vibrant Servicesvibrantservices.com.au HQ: Coburg North, AustraliaReported employees: 201-500 | Coburg North, Australia | 201-500 | Exact match | 56 contacts → |
“Welcome to Vibrant Services.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Premium Solutionspremiumsolutions.au HQ: Woollahra, AustraliaReported employees: 51-200 | Woollahra, Australia | 51-200 | Exact match | 56 contacts → |
“Combining the very best personnel, processes and technology, Premium Solutions will redefine your expectations of the security industry.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Securcom PTY LTDsecurcom.com.au HQ: Brendale, AustraliaReported employees: 51-200 | Brendale, Australia | 51-200 | Exact match | 55 contacts → |
“Established in the year Securcom has 20 years’ experience as a specialist security solution provider.” Recorded description excerpt · November 6, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 22 of 629 company matches
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Critical infrastructure protection contractors: dataset insights
November 6, 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
623 records in the displayed employee bands.
6 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 worldwide rather than for Australia, so it is reported there. Company counts and contact totals on this page are exact for Australia, over 629 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 6, 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 protection contractors by metro
- Critical infrastructure protection contractors in Melbourne123
- Critical infrastructure protection contractors in Sydney109
- Critical infrastructure protection contractors in Brisbane53
- Critical infrastructure protection contractors in Canberra33
- Critical infrastructure protection contractors in Perth32
Questions about this company list
What does Exact match mean for critical infrastructure protection contractors?
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 protection contractors did RevenueBase find based in Australia?
The saved snapshot records 629 matching company records, 9,653 tracked contacts and 2,968 verified emails. The public preview displays 22 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 6, 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
Critical infrastructure protection contractors by geography
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Cite this list
RevenueBase Data Team. Top 22 critical infrastructure protection contractors based in Australia. Snapshot: November 6, 2026. https://revenuebase.ai/companies/critical-infrastructure-protection-contractors/australia.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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