Company lists · Data refreshed November 2026
Top 23 Critical infrastructure security companies based in Australia
RevenueBase identified 273 company matches for critical infrastructure security companies associated with Australia as of November 2026 and tracks 4,020 professional contacts across them, including 1,425 with verified work emails. Sydney is the largest hub.
This list covers company matches for critical infrastructure security companies 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 5, 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 23 largest critical infrastructure security companies based in Australia
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 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 5, 2026 · View company records in RevenueBase | |||||
| 2 | 487 contacts → | ||||
Exact match “We are APD Global.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 3 | 121 contacts → | ||||
Exact match “Triskele Labs is one of Australia’s fastest growing cybersecurity companies.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 4 | 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 5, 2026 · View company records in RevenueBase | |||||
| 5 | 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 5, 2026 · View company records in RevenueBase | |||||
| 6 | 76 contacts → | ||||
Exact match “AG Security Group is South Australia's leading and largest locally owned security organisation that has been protecting Australians for more than 35 years.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 7 | 73 contacts → | ||||
Exact match “AMS Group safeguard and secure Australia's critical infrastructure and provide mission critical services and solutions.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 8 | 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 5, 2026 · View company records in RevenueBase | |||||
| 9 | 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 5, 2026 · View company records in RevenueBase | |||||
| 10 | 43 contacts → | ||||
Exact match “Seccom Global - The Cyber Security Company Providing excellence in service to educate, connect and protect your business Founded in 2003, Seccom Global is recognised as a leader…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 11 | 41 contacts → | ||||
Exact match “Vectra, an Ensign company, is Australia’s trusted partner for security consulting, risk management, compliance, and managed services.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 12 | 41 contacts → | ||||
Exact match “Our mission is to help our clients protect their assets, reputation, and customers from cyber threats, while also enabling them to embrace digital transformation and innovation…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 13 | 39 contacts → | ||||
Exact match “When it comes to security there's no shortage of companies ready to tell you about your vulnerabilities.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 14 | 39 contacts → | ||||
Exact match “Future Fibre Technologies (FFT) manufactures and markets a range of fibre optic intrusion detection and location systems that are, quite simply, the world's most effective…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 15 | 35 contacts → | ||||
Exact match “Founded by Sohail Ershadi, a distinguished cybersecurity expert with over a decade of experience in the IT industry, CyberXcel has rapidly emerged as a leader in cybersecurity…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 16 | 34 contacts → | ||||
Exact match “NSB Cyber is an Australian-founded, privately owned cyber security company based in Sydney.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 17 | 33 contacts → | ||||
Exact match “OpusV has been operating in the infrastructure design and support space for over 20 years.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 18 | 33 contacts → | ||||
Exact match “Critical Infrastructure Division are Engineers, tradespeople and technicians specialising in Critical Power, Data Centre and Server Room infrastructure, monitoring and controls.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 19 | 30 contacts → | ||||
Exact match “Borderless CS is Australia's leading Cybersecurity specialist, 100% Cyberseuirty focused, 100% Australian-based.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 20 | 29 contacts → | ||||
Exact match “Ava Group is a market leader of risk management services and technologies, trusted by some of the most security conscious commercial, industrial, military and government clients…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 21 | 28 contacts → | ||||
Exact match “FreeCall 1800 GROUP 1.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 22 | 27 contacts → | ||||
Exact match “Fortian is a leading Australian company specialising in cyber security, privacy, and technology risk management.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 23 | 27 contacts → | ||||
Exact match “Secolve is Australia's dedicated Operational Technology (OT) cybersecurity partner, protecting the critical infrastructure that powers everyday life across energy, water…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “critical infrastructure security companies”. 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 23 of 273 critical infrastructure security companies based in Australia
See the full list, filter by size, metro and specialty, and access 1,425 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Critical infrastructure security companies based in Australia at a glance
As of Nov 5, 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 273 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 security companies” 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 1,425 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on November 5, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Critical infrastructure security companies by metro
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 companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many critical infrastructure security companies are there based in Australia?
RevenueBase identified 273 company matches for critical infrastructure security companies 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?
SNP 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 security companies?
Sydney leads with 53 company records, followed by Melbourne (49) and Brisbane (24).
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 1,425 professional contacts with verified work emails tracked across these 273 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 5, 2026.
Ready to reach these companies? Verified emails and direct dials for all 273 critical infrastructure security companies based in Australia. Start with a free account, no credit card.
Download this list →Related lists
Critical infrastructure security companies by geography
- Critical infrastructure security companies based in Buenos Aires, Argentina
- Critical infrastructure security companies based in Melbourne, Australia
- Critical infrastructure security companies based in Sydney, Australia
- Critical infrastructure security companies based in Sao Paulo, Brazil
- Critical infrastructure security companies based in Montreal, Canada
- Critical infrastructure security companies based in Toronto, Canada
- Critical infrastructure security companies based in Santiago, Chile
- Critical infrastructure security companies based in Paris, France
- Critical infrastructure security companies based in Bangalore, India
- Critical infrastructure security companies based in Chennai, India
- Critical infrastructure security companies based in Hyderabad, India
- Critical infrastructure security companies based in Mumbai, India
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
- Lists by location
- Lists A-Z
- New lists
- Critical infrastructure security companies based in Buenos Aires, Argentina
- Critical infrastructure security companies based in Melbourne, Australia
- Critical infrastructure security companies based in Sydney, Australia
- Critical infrastructure security companies based in Sao Paulo, Brazil
- Critical infrastructure security companies based in Montreal, Canada
- Critical infrastructure security companies based in Toronto, Canada
Company intelligence · public preview
Top 23 critical infrastructure security companies 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 273 matching company records for critical infrastructure security companies based in Australia, with 4,020 tracked contacts and 1,425 verified work emails.
This public preview shows 23 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 5, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 23 critical infrastructure security companies 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 |  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 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  APD Globalapdglobal.comHQ: Darwin, AustraliaReported employees: 1,001-5,000 | Darwin, Australia | 1,001-5,000 | Exact match | 487 contacts → |
“We are APD Global.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  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 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  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 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  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 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  AG Security Groupagsecurity.com.auHQ: Adelaide, AustraliaReported employees: 51-200 | Adelaide, Australia | 51-200 | Exact match | 76 contacts → |
“AG Security Group is South Australia's leading and largest locally owned security organisation that has been protecting Australians for more than 35 years.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  AMS Groupams.groupHQ: Brisbane, AustraliaReported employees: 201-500 | Brisbane, Australia | 201-500 | Exact match | 73 contacts → |
“AMS Group safeguard and secure Australia's critical infrastructure and provide mission critical services and solutions.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  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 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  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 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Seccom Globalseccomglobal.comHQ: Sydney, AustraliaReported employees: 11-50 | Sydney, Australia | 11-50 | Exact match | 43 contacts → |
“Seccom Global - The Cyber Security Company Providing excellence in service to educate, connect and protect your business Founded in 2003, Seccom Global is recognised as a leader…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Vectravectra-corp.comHQ: Adelaide, AustraliaReported employees: 51-200 | Adelaide, Australia | 51-200 | Exact match | 41 contacts → |
“Vectra, an Ensign company, is Australia’s trusted partner for security consulting, risk management, compliance, and managed services.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Wipro Sheldeampion.com.auHQ: Melbourne, AustraliaReported employees: 51-200 | Melbourne, Australia | 51-200 | Exact match | 41 contacts → |
“Our mission is to help our clients protect their assets, reputation, and customers from cyber threats, while also enabling them to embrace digital transformation and innovation…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Ionizeionize.com.auHQ: Canberra, AustraliaReported employees: 51-200 | Canberra, Australia | 51-200 | Exact match | 39 contacts → |
“When it comes to security there's no shortage of companies ready to tell you about your vulnerabilities.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Future Fibre Technologiesfftsecurity.comHQ: Mulgrave, AustraliaReported employees: 51-200 | Mulgrave, Australia | 51-200 | Exact match | 39 contacts → |
“Future Fibre Technologies (FFT) manufactures and markets a range of fibre optic intrusion detection and location systems that are, quite simply, the world's most effective…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Cyberxcelcyberxcel.com.auHQ: Brisbane, AustraliaReported employees: Not recorded | Brisbane, Australia | Not recorded | Exact match | 35 contacts → |
“Founded by Sohail Ershadi, a distinguished cybersecurity expert with over a decade of experience in the IT industry, CyberXcel has rapidly emerged as a leader in cybersecurity…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  NSB Cybernsbcyber.comHQ: Sydney, AustraliaReported employees: 11-50 | Sydney, Australia | 11-50 | Exact match | 34 contacts → |
“NSB Cyber is an Australian-founded, privately owned cyber security company based in Sydney.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Opusv Tech Groupopusv.com.auHQ: Oakleigh, AustraliaReported employees: 11-50 | Oakleigh, Australia | 11-50 | Exact match | 33 contacts → |
“OpusV has been operating in the infrastructure design and support space for over 20 years.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Secure Bitssecurebits.com.auHQ: Symonston, AustraliaReported employees: 51-200 | Symonston, Australia | 51-200 | Exact match | 33 contacts → |
“Critical Infrastructure Division are Engineers, tradespeople and technicians specialising in Critical Power, Data Centre and Server Room infrastructure, monitoring and controls.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Borderless CSborderlesscs.com.auHQ: Melbourne, AustraliaReported employees: 11-50 | Melbourne, Australia | 11-50 | Exact match | 30 contacts → |
“Borderless CS is Australia's leading Cybersecurity specialist, 100% Cyberseuirty focused, 100% Australian-based.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  AVA Grouptheavagroup.comHQ: Mulgrave, AustraliaReported employees: 51-200 | Mulgrave, Australia | 51-200 | Exact match | 29 contacts → |
“Ava Group is a market leader of risk management services and technologies, trusted by some of the most security conscious commercial, industrial, military and government clients…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Group 1 Securityg1s.com.auHQ: Sydney, AustraliaReported employees: 201-500 | Sydney, Australia | 201-500 | Exact match | 28 contacts → |
“FreeCall 1800 GROUP 1.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Fortianfortian.com.auHQ: Sydney, AustraliaReported employees: 11-50 | Sydney, Australia | 11-50 | Exact match | 27 contacts → |
“Fortian is a leading Australian company specialising in cyber security, privacy, and technology risk management.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Secolvesecolve.comHQ: Sydney, AustraliaReported employees: 11-50 | Sydney, Australia | 11-50 | Exact match | 27 contacts → |
“Secolve is Australia's dedicated Operational Technology (OT) cybersecurity partner, protecting the critical infrastructure that powers everyday life across energy, water…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 23 of 273 company matches
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Critical infrastructure security companies: dataset insights
November 5, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
272 records in the displayed employee bands.
1 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 273 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 5, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Critical infrastructure security companies by metro
Questions about this company list
What does Exact match mean for critical infrastructure security companies?
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 companies did RevenueBase find based in Australia?
The saved snapshot records 273 matching company records, 4,020 tracked contacts and 1,425 verified emails. The public preview displays 23 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 5, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Critical infrastructure security companies by geography
- Critical infrastructure security companies based in Buenos Aires, Argentina
- Critical infrastructure security companies based in Melbourne, Australia
- Critical infrastructure security companies based in Sydney, Australia
- Critical infrastructure security companies based in Sao Paulo, Brazil
- Critical infrastructure security companies based in Montreal, Canada
- Critical infrastructure security companies based in Toronto, Canada
- Critical infrastructure security companies based in Santiago, Chile
- Critical infrastructure security companies based in Paris, France
- Critical infrastructure security companies based in Bangalore, India
- Critical infrastructure security companies based in Chennai, India
- Critical infrastructure security companies based in Hyderabad, India
- Critical infrastructure security companies based in Mumbai, India
Cite this list
RevenueBase Data Team. Top 23 critical infrastructure security companies based in Australia. Snapshot: November 5, 2026. https://revenuebase.ai/companies/critical-infrastructure-security-companies/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 security companies based in Buenos Aires, Argentina
- Critical infrastructure security companies based in Melbourne, Australia
- Critical infrastructure security companies based in Sydney, Australia
- Critical infrastructure security companies based in Sao Paulo, Brazil
- Critical infrastructure security companies based in Montreal, Canada
- Critical infrastructure security companies based in Toronto, Canada
Company intelligence · public preview
Top 23 critical infrastructure security companies based in Australia
RevenueBase records 273 matching company records for critical infrastructure security companies based in Australia, with 4,020 tracked contacts and 1,425 verified work emails.
This public preview shows 23 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: November 5, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 23 critical infrastructure security companies 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 | 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 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | APD Globalapdglobal.com HQ: Darwin, AustraliaReported employees: 1,001-5,000 | Darwin, Australia | 1,001-5,000 | Exact match | 487 contacts → |
“We are APD Global.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | 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 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | 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 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | 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 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | AG Security Groupagsecurity.com.au HQ: Adelaide, AustraliaReported employees: 51-200 | Adelaide, Australia | 51-200 | Exact match | 76 contacts → |
“AG Security Group is South Australia's leading and largest locally owned security organisation that has been protecting Australians for more than 35 years.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | AMS Groupams.group HQ: Brisbane, AustraliaReported employees: 201-500 | Brisbane, Australia | 201-500 | Exact match | 73 contacts → |
“AMS Group safeguard and secure Australia's critical infrastructure and provide mission critical services and solutions.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | 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 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | 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 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Seccom Globalseccomglobal.com HQ: Sydney, AustraliaReported employees: 11-50 | Sydney, Australia | 11-50 | Exact match | 43 contacts → |
“Seccom Global - The Cyber Security Company Providing excellence in service to educate, connect and protect your business Founded in 2003, Seccom Global is recognised as a leader…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Vectravectra-corp.com HQ: Adelaide, AustraliaReported employees: 51-200 | Adelaide, Australia | 51-200 | Exact match | 41 contacts → |
“Vectra, an Ensign company, is Australia’s trusted partner for security consulting, risk management, compliance, and managed services.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Wipro Sheldeampion.com.au HQ: Melbourne, AustraliaReported employees: 51-200 | Melbourne, Australia | 51-200 | Exact match | 41 contacts → |
“Our mission is to help our clients protect their assets, reputation, and customers from cyber threats, while also enabling them to embrace digital transformation and innovation…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Ionizeionize.com.au HQ: Canberra, AustraliaReported employees: 51-200 | Canberra, Australia | 51-200 | Exact match | 39 contacts → |
“When it comes to security there's no shortage of companies ready to tell you about your vulnerabilities.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Future Fibre Technologiesfftsecurity.com HQ: Mulgrave, AustraliaReported employees: 51-200 | Mulgrave, Australia | 51-200 | Exact match | 39 contacts → |
“Future Fibre Technologies (FFT) manufactures and markets a range of fibre optic intrusion detection and location systems that are, quite simply, the world's most effective…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Cyberxcelcyberxcel.com.au HQ: Brisbane, AustraliaReported employees: Not recorded | Brisbane, Australia | Not recorded | Exact match | 35 contacts → |
“Founded by Sohail Ershadi, a distinguished cybersecurity expert with over a decade of experience in the IT industry, CyberXcel has rapidly emerged as a leader in cybersecurity…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | NSB Cybernsbcyber.com HQ: Sydney, AustraliaReported employees: 11-50 | Sydney, Australia | 11-50 | Exact match | 34 contacts → |
“NSB Cyber is an Australian-founded, privately owned cyber security company based in Sydney.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Opusv Tech Groupopusv.com.au HQ: Oakleigh, AustraliaReported employees: 11-50 | Oakleigh, Australia | 11-50 | Exact match | 33 contacts → |
“OpusV has been operating in the infrastructure design and support space for over 20 years.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Secure Bitssecurebits.com.au HQ: Symonston, AustraliaReported employees: 51-200 | Symonston, Australia | 51-200 | Exact match | 33 contacts → |
“Critical Infrastructure Division are Engineers, tradespeople and technicians specialising in Critical Power, Data Centre and Server Room infrastructure, monitoring and controls.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Borderless CSborderlesscs.com.au HQ: Melbourne, AustraliaReported employees: 11-50 | Melbourne, Australia | 11-50 | Exact match | 30 contacts → |
“Borderless CS is Australia's leading Cybersecurity specialist, 100% Cyberseuirty focused, 100% Australian-based.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | AVA Grouptheavagroup.com HQ: Mulgrave, AustraliaReported employees: 51-200 | Mulgrave, Australia | 51-200 | Exact match | 29 contacts → |
“Ava Group is a market leader of risk management services and technologies, trusted by some of the most security conscious commercial, industrial, military and government clients…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Group 1 Securityg1s.com.au HQ: Sydney, AustraliaReported employees: 201-500 | Sydney, Australia | 201-500 | Exact match | 28 contacts → |
“FreeCall 1800 GROUP 1.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Fortianfortian.com.au HQ: Sydney, AustraliaReported employees: 11-50 | Sydney, Australia | 11-50 | Exact match | 27 contacts → |
“Fortian is a leading Australian company specialising in cyber security, privacy, and technology risk management.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Secolvesecolve.com HQ: Sydney, AustraliaReported employees: 11-50 | Sydney, Australia | 11-50 | Exact match | 27 contacts → |
“Secolve is Australia's dedicated Operational Technology (OT) cybersecurity partner, protecting the critical infrastructure that powers everyday life across energy, water…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 23 of 273 company matches
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Critical infrastructure security companies: dataset insights
November 5, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
272 records in the displayed employee bands.
1 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 273 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: November 5, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Critical infrastructure security companies by metro
Questions about this company list
What does Exact match mean for critical infrastructure security companies?
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 companies did RevenueBase find based in Australia?
The saved snapshot records 273 matching company records, 4,020 tracked contacts and 1,425 verified emails. The public preview displays 23 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: November 5, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Critical infrastructure security companies by geography
- Critical infrastructure security companies based in Buenos Aires, Argentina
- Critical infrastructure security companies based in Melbourne, Australia
- Critical infrastructure security companies based in Sydney, Australia
- Critical infrastructure security companies based in Sao Paulo, Brazil
- Critical infrastructure security companies based in Montreal, Canada
- Critical infrastructure security companies based in Toronto, Canada
- Critical infrastructure security companies based in Santiago, Chile
- Critical infrastructure security companies based in Paris, France
- Critical infrastructure security companies based in Bangalore, India
- Critical infrastructure security companies based in Chennai, India
- Critical infrastructure security companies based in Hyderabad, India
- Critical infrastructure security companies based in Mumbai, India
Cite this list
RevenueBase Data Team. Top 23 critical infrastructure security companies based in Australia. Snapshot: November 5, 2026. https://revenuebase.ai/companies/critical-infrastructure-security-companies/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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- Critical infrastructure security companies based in Buenos Aires, Argentina
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