Company lists · Data refreshed November 2026
Top 15 Operational technology security (ot security) system suppliers based in Australia
RevenueBase identified 27 company matches for operational technology security (ot security) system suppliers associated with Australia as of November 2026 and tracks 317 professional contacts across them, including 154 with verified work emails. Brisbane is the largest hub.
This list covers company matches for operational technology security (ot security) system suppliers 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 15 largest operational technology security (ot security) system suppliers based in Australia
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 89 contacts → | ||||
Exact match “Intellect Systems is an end-to-end Operational Technology solution provider, specialising in Control Systems, Electrical Engineering, Communications, and Industrial IT…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 2 | 28 contacts → | ||||
Exact match “For over 25 years, Parasyn has been a leading software engineering expert, empowering critical infrastructure and industrial sectors to achieve operational excellence.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 3 | 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 | |||||
| 4 | 19 contacts → | ||||
Exact match “accesstel is Australia’s leading provider of actionable insights for distributed networks of critical assets.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 5 | 19 contacts → | ||||
Exact match “SIS Industrial Cyber Security protects what the world depends on but rarely sees.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 6 | 12 contacts → | ||||
Exact match “Ryalex Security are electronic security specialists servicing the industrial, financial and commercial market.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 7 | 7 contacts → | ||||
Exact match “RIOT is a local, national provider of managed cyber security services across both IT and OT environments that differentiates itself by offering customers access to experts in the…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 8 | 5 contacts → | ||||
Exact match “Goto Electrical Pty Ltd provides industry leading consultancy, design and integration services for operational technology to Critical Infrastructure clients.” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 9 | 4 contacts → | ||||
Exact match “Cyber Industrial Networks (Ci-Net) is an Australian-owned OT/IT and industrial networking business specialising in the design, deployment and security of critical operational…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 10 | 3 contacts → | ||||
Exact match “Operational Technology (OT) Consultants to the Utility sector; smart metering, communications for infrastructure, Supervisory Control and Data Acquisition (SCADA), industrial…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 11 | 2 contacts → | ||||
Exact match “DGA Consulting is a specialist Operational Technology (OT) consulting company consisting of talented and experienced professionals who collaborate to solve client challenges in…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 12 | 1 contacts → | ||||
Exact match “Availability System Engineering is a discipline that focusses on the design, development, and maintenance for technologies that control, protect, and support business processes to…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 13 | 1 contacts → | ||||
Exact match “We are a trusted provider of comprehensive Operational Technology (OT) audit, advisory, and remediation services, designed to ensure buildings are digitally ready to meet the…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 14 | 1 contacts → | ||||
Exact match “Assembly-Tek specialises in collaborating with our clients to optimize their smart OT-Manufacturing solutions, encompassing both digital solutions and cutting-edge smart…” Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase | |||||
| 15 | 1 contacts → | ||||
Exact match “At Defend OT, our mission is simple and powerful:'To safeguard operations and secure your success.' This guiding principle drives everything we do as a leading provider of…” 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 “operational technology security (ot security) system suppliers”. 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 15 of 27 operational technology security (ot security) system suppliers based in Australia
See the full list, filter by size, metro and specialty, and access 154 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Operational technology security (ot security) system suppliers 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 27 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 “operational technology security (ot security) system suppliers” 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 154 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.
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 “operational technology security (ot security) system suppliers”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many operational technology security (ot security) system suppliers are there based in Australia?
RevenueBase identified 27 company matches for operational technology security (ot security) system suppliers 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?
Intellect Systems tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most operational technology security (ot security) system suppliers?
Brisbane leads with 4 company records, followed by Melbourne (3) and Sydney (3).
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 154 professional contacts with verified work emails tracked across these 27 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 27 operational technology security (ot security) system suppliers based in Australia. Start with a free account, no credit card.
Download this list →Related lists
Operational technology security (ot security) system suppliers by geography
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- Operational technology security (ot security) system suppliers based in Brazil
- Operational technology security (ot security) system suppliers based in Germany
- Operational technology security (ot security) system suppliers based in India
- Operational technology security (ot security) system suppliers based in Italy
- Operational technology security (ot security) system suppliers based in the Netherlands
- Operational technology security (ot security) system suppliers based in the United Kingdom
- Operational technology security (ot security) system suppliers based in the United States
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.
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Company intelligence · public preview
Top 15 operational technology security (ot security) system suppliers 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 27 matching company records for operational technology security (ot security) system suppliers based in Australia, with 317 tracked contacts and 154 verified work emails.
This public preview shows 15 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 15 operational technology security (ot security) system suppliers 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 |  Intellect Systemsintellectsystems.com.auHQ: Perth, AustraliaReported employees: 51-200 | Perth, Australia | 51-200 | Exact match | 89 contacts → |
“Intellect Systems is an end-to-end Operational Technology solution provider, specialising in Control Systems, Electrical Engineering, Communications, and Industrial IT…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Parasynparasyn.com.auHQ: Tingalpa, AustraliaReported employees: 11-50 | Tingalpa, Australia | 11-50 | Exact match | 28 contacts → |
“For over 25 years, Parasyn has been a leading software engineering expert, empowering critical infrastructure and industrial sectors to achieve operational excellence.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  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. | |||||
| 4 |  Accesstelaccesstel.com.auHQ: Yarraville, AustraliaReported employees: 11-50 | Yarraville, Australia | 11-50 | Exact match | 19 contacts → |
“accesstel is Australia’s leading provider of actionable insights for distributed networks of critical assets.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  SIS Industrial Cyber Securitysis-ics.comHQ: South Yarra, AustraliaReported employees: 11-50 | South Yarra, Australia | 11-50 | Exact match | 19 contacts → |
“SIS Industrial Cyber Security protects what the world depends on but rarely sees.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Ryalex Securityryalex.com.auHQ: Kirrawee, AustraliaReported employees: 11-50 | Kirrawee, Australia | 11-50 | Exact match | 12 contacts → |
“Ryalex Security are electronic security specialists servicing the industrial, financial and commercial market.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Riot Solutionsorro.groupHQ: Brisbane, AustraliaReported employees: 51-200 | Brisbane, Australia | 51-200 | Exact match | 7 contacts → |
“RIOT is a local, national provider of managed cyber security services across both IT and OT environments that differentiates itself by offering customers access to experts in the…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Goto Electrical PTY LTDgotoelectrical.com.auHQ: North Lakes, AustraliaReported employees: 1-10 | North Lakes, Australia | 1-10 | Exact match | 5 contacts → |
“Goto Electrical Pty Ltd provides industry leading consultancy, design and integration services for operational technology to Critical Infrastructure clients.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Cyber Industrial Networks PTY LTDci-net.com.auHQ: Mayfield West, AustraliaReported employees: 1-10 | Mayfield West, Australia | 1-10 | Exact match | 4 contacts → |
“Cyber Industrial Networks (Ci-Net) is an Australian-owned OT/IT and industrial networking business specialising in the design, deployment and security of critical operational…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Utility Intelligence PTY LTDutilityintel.com.auHQ: Melbourne, AustraliaReported employees: 1-10 | Melbourne, Australia | 1-10 | Exact match | 3 contacts → |
“Operational Technology (OT) Consultants to the Utility sector; smart metering, communications for infrastructure, Supervisory Control and Data Acquisition (SCADA), industrial…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  DGA Consultingdga-consulting.com.auHQ: Sydney, AustraliaReported employees: 1-10 | Sydney, Australia | 1-10 | Exact match | 2 contacts → |
“DGA Consulting is a specialist Operational Technology (OT) consulting company consisting of talented and experienced professionals who collaborate to solve client challenges in…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Availability System Engineeringase.technologyHQ: Perth, AustraliaReported employees: 11-50 | Perth, Australia | 11-50 | Exact match | 1 contacts → |
“Availability System Engineering is a discipline that focusses on the design, development, and maintenance for technologies that control, protect, and support business processes to…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Emeseyeemeseye.com.auHQ: Canberra, AustraliaReported employees: 1-10 | Canberra, Australia | 1-10 | Exact match | 1 contacts → |
“We are a trusted provider of comprehensive Operational Technology (OT) audit, advisory, and remediation services, designed to ensure buildings are digitally ready to meet the…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Assembly-Tekassembly-tek.com.auHQ: Sydney, AustraliaReported employees: 1-10 | Sydney, Australia | 1-10 | Exact match | 1 contacts → |
“Assembly-Tek specialises in collaborating with our clients to optimize their smart OT-Manufacturing solutions, encompassing both digital solutions and cutting-edge smart…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Defend OTdefendot.com.auHQ: Milton, AustraliaReported employees: 1-10 | Milton, Australia | 1-10 | Exact match | 1 contacts → |
“At Defend OT, our mission is simple and powerful:'To safeguard operations and secure your success.' This guiding principle drives everything we do as a leading provider of…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 15 of 27 company matches
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Operational technology security (ot security) system suppliers: 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
27 records in the displayed employee bands.
0 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 27 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 ↗
Questions about this company list
What does Exact match mean for operational technology security (ot security) system suppliers?
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 operational technology security (ot security) system suppliers did RevenueBase find based in Australia?
The saved snapshot records 27 matching company records, 317 tracked contacts and 154 verified emails. The public preview displays 15 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
Operational technology security (ot security) system suppliers by geography
- Operational technology security (ot security) system suppliers based in London, United Kingdom
- Operational technology security (ot security) system suppliers based in Brazil
- Operational technology security (ot security) system suppliers based in Germany
- Operational technology security (ot security) system suppliers based in India
- Operational technology security (ot security) system suppliers based in Italy
- Operational technology security (ot security) system suppliers based in the Netherlands
- Operational technology security (ot security) system suppliers based in the United Kingdom
- Operational technology security (ot security) system suppliers based in the United States
Cite this list
RevenueBase Data Team. Top 15 operational technology security (ot security) system suppliers based in Australia. Snapshot: November 5, 2026. https://revenuebase.ai/companies/operational-technology-security-ot-security-system-suppliers/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
- Operational technology security (ot security) system suppliers based in London, United Kingdom
- Operational technology security (ot security) system suppliers based in Brazil
- Operational technology security (ot security) system suppliers based in Germany
- Operational technology security (ot security) system suppliers based in India
- Operational technology security (ot security) system suppliers based in Italy
- Operational technology security (ot security) system suppliers based in the Netherlands
Company intelligence · public preview
Top 15 operational technology security (ot security) system suppliers based in Australia
RevenueBase records 27 matching company records for operational technology security (ot security) system suppliers based in Australia, with 317 tracked contacts and 154 verified work emails.
This public preview shows 15 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 15 operational technology security (ot security) system suppliers 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 | Intellect Systemsintellectsystems.com.au HQ: Perth, AustraliaReported employees: 51-200 | Perth, Australia | 51-200 | Exact match | 89 contacts → |
“Intellect Systems is an end-to-end Operational Technology solution provider, specialising in Control Systems, Electrical Engineering, Communications, and Industrial IT…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Parasynparasyn.com.au HQ: Tingalpa, AustraliaReported employees: 11-50 | Tingalpa, Australia | 11-50 | Exact match | 28 contacts → |
“For over 25 years, Parasyn has been a leading software engineering expert, empowering critical infrastructure and industrial sectors to achieve operational excellence.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | 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. | |||||
| 4 | Accesstelaccesstel.com.au HQ: Yarraville, AustraliaReported employees: 11-50 | Yarraville, Australia | 11-50 | Exact match | 19 contacts → |
“accesstel is Australia’s leading provider of actionable insights for distributed networks of critical assets.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | SIS Industrial Cyber Securitysis-ics.com HQ: South Yarra, AustraliaReported employees: 11-50 | South Yarra, Australia | 11-50 | Exact match | 19 contacts → |
“SIS Industrial Cyber Security protects what the world depends on but rarely sees.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Ryalex Securityryalex.com.au HQ: Kirrawee, AustraliaReported employees: 11-50 | Kirrawee, Australia | 11-50 | Exact match | 12 contacts → |
“Ryalex Security are electronic security specialists servicing the industrial, financial and commercial market.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Riot Solutionsorro.group HQ: Brisbane, AustraliaReported employees: 51-200 | Brisbane, Australia | 51-200 | Exact match | 7 contacts → |
“RIOT is a local, national provider of managed cyber security services across both IT and OT environments that differentiates itself by offering customers access to experts in the…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Goto Electrical PTY LTDgotoelectrical.com.au HQ: North Lakes, AustraliaReported employees: 1-10 | North Lakes, Australia | 1-10 | Exact match | 5 contacts → |
“Goto Electrical Pty Ltd provides industry leading consultancy, design and integration services for operational technology to Critical Infrastructure clients.” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Cyber Industrial Networks PTY LTDci-net.com.au HQ: Mayfield West, AustraliaReported employees: 1-10 | Mayfield West, Australia | 1-10 | Exact match | 4 contacts → |
“Cyber Industrial Networks (Ci-Net) is an Australian-owned OT/IT and industrial networking business specialising in the design, deployment and security of critical operational…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Utility Intelligence PTY LTDutilityintel.com.au HQ: Melbourne, AustraliaReported employees: 1-10 | Melbourne, Australia | 1-10 | Exact match | 3 contacts → |
“Operational Technology (OT) Consultants to the Utility sector; smart metering, communications for infrastructure, Supervisory Control and Data Acquisition (SCADA), industrial…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | DGA Consultingdga-consulting.com.au HQ: Sydney, AustraliaReported employees: 1-10 | Sydney, Australia | 1-10 | Exact match | 2 contacts → |
“DGA Consulting is a specialist Operational Technology (OT) consulting company consisting of talented and experienced professionals who collaborate to solve client challenges in…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Availability System Engineeringase.technology HQ: Perth, AustraliaReported employees: 11-50 | Perth, Australia | 11-50 | Exact match | 1 contacts → |
“Availability System Engineering is a discipline that focusses on the design, development, and maintenance for technologies that control, protect, and support business processes to…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Emeseyeemeseye.com.au HQ: Canberra, AustraliaReported employees: 1-10 | Canberra, Australia | 1-10 | Exact match | 1 contacts → |
“We are a trusted provider of comprehensive Operational Technology (OT) audit, advisory, and remediation services, designed to ensure buildings are digitally ready to meet the…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Assembly-Tekassembly-tek.com.au HQ: Sydney, AustraliaReported employees: 1-10 | Sydney, Australia | 1-10 | Exact match | 1 contacts → |
“Assembly-Tek specialises in collaborating with our clients to optimize their smart OT-Manufacturing solutions, encompassing both digital solutions and cutting-edge smart…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Defend OTdefendot.com.au HQ: Milton, AustraliaReported employees: 1-10 | Milton, Australia | 1-10 | Exact match | 1 contacts → |
“At Defend OT, our mission is simple and powerful:'To safeguard operations and secure your success.' This guiding principle drives everything we do as a leading provider of…” Recorded description excerpt · November 5, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 15 of 27 company matches
Build a targeted audience, find relevant contacts and export available records to your workflow.
Free signup · 500 credits · limited free results
Operational technology security (ot security) system suppliers: 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
27 records in the displayed employee bands.
0 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 27 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 ↗
Questions about this company list
What does Exact match mean for operational technology security (ot security) system suppliers?
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 operational technology security (ot security) system suppliers did RevenueBase find based in Australia?
The saved snapshot records 27 matching company records, 317 tracked contacts and 154 verified emails. The public preview displays 15 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
Operational technology security (ot security) system suppliers by geography
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- Operational technology security (ot security) system suppliers based in Italy
- Operational technology security (ot security) system suppliers based in the Netherlands
- Operational technology security (ot security) system suppliers based in the United Kingdom
- Operational technology security (ot security) system suppliers based in the United States
Cite this list
RevenueBase Data Team. Top 15 operational technology security (ot security) system suppliers based in Australia. Snapshot: November 5, 2026. https://revenuebase.ai/companies/operational-technology-security-ot-security-system-suppliers/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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- Operational technology security (ot security) system suppliers based in London, United Kingdom
- Operational technology security (ot security) system suppliers based in Brazil
- Operational technology security (ot security) system suppliers based in Germany
- Operational technology security (ot security) system suppliers based in India
- Operational technology security (ot security) system suppliers based in Italy
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