Company lists · Data refreshed October 2026

Top 25 Operational technology (ot) cyber security services based in Australia

RevenueBase identified 84 company matches for operational technology (ot) cyber security services associated with Australia as of October 2026 and tracks 921 professional contacts across them, including 309 with verified work emails. Melbourne is the largest hub.

This list covers company matches for operational technology (ot) cyber security services 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 October 19, 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.

How to read this list RevenueBase SmartSearch · Exact Recorded Oct 19, 2026 How this list was built
84Companies
921Contacts tracked
309Verified emails
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The 25 largest operational technology (ot) cyber security services based in Australia

Ranked by team size
Top 25 of 84 company matches for operational technology (ot) cyber security services based in Australia, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 19, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchMelbourne, AustraliaHQ recorded Oct 19, 202651-200118 contacts →

Exact match

“Triskele Labs is one of Australia’s fastest growing cybersecurity companies.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
2Exact matchAdelaide, AustraliaHQ recorded Oct 19, 202651-20040 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 · Oct 19, 2026 · View company records in RevenueBase
3Exact matchTingalpa, AustraliaHQ recorded Oct 19, 202611-5029 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 · Oct 19, 2026 · View company records in RevenueBase
4Exact matchMelbourne, AustraliaHQ recorded Oct 19, 202611-5027 contacts →

Exact match

“Fortian is a leading Australian company specialising in cyber security, privacy, and technology risk management.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
5Exact matchSydney, AustraliaHQ recorded Oct 19, 202611-5026 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 · Oct 19, 2026 · View company records in RevenueBase
6Exact matchSydney, AustraliaHQ recorded Oct 19, 202611-5019 contacts →

Exact match

“Minimise the risk of a cybersecurity incident.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
7Exact matchSouth Yarra, AustraliaHQ recorded Oct 19, 202611-5019 contacts →

Exact match

“SIS Industrial Cyber Security protects what the world depends on but rarely sees.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
8Exact matchTullamarine, AustraliaHQ recorded Oct 19, 202611-5016 contacts →

Exact match

“Zynet is an Australian cyber security and IT services provider with more than 25 years of experience protecting organisations and keeping critical systems running.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
9Exact matchMelbourne, AustraliaHQ recorded Oct 19, 202611-5015 contacts →

Exact match

“We help organisations get better at Security Operations and Cyber Threat Intelligence with specialised consulting, engineering, and managed security platforms.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
10Exact matchSouth East Queensland, AustraliaHQ recorded Oct 19, 202611-5013 contacts →

Exact match

“Cyber Audit Team is a leading multi-disciplinary Australian cyber security company offering holistic 'end-to-end' solutions, ensuring that our clients' businesses are operating in…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
11Exact matchCremorne, AustraliaHQ recorded Oct 19, 202611-5012 contacts →

Exact match

“Facing the Complexities of Cybersecurity?”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
12Exact matchSydney, AustraliaHQ recorded Oct 19, 202611-5011 contacts →

Exact match

“At Parabellum, we help organisations see clearly and act confidently in a complex digital world.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
13Exact matchCastle Hill, AustraliaHQ recorded Oct 19, 202611-5010 contacts →

Exact match

“First responders.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
14Exact matchSouthbank, AustraliaHQ recorded Oct 19, 202611-507 contacts →

Exact match

“Crysp Consulting (Crysp) was founded by two professionals with collective experience of more than 35 years in the industry.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
15Exact matchChatswood, AustraliaHQ recorded Oct 19, 20261-106 contacts →

Exact match

“Operating since 1995, Langdale provides Engineering and IT consulting and technical services with a focus in enterprise Information Technology and Operational Technology…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
16Exact matchBrisbane, AustraliaHQ recorded Oct 19, 202651-2006 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 · Oct 19, 2026 · View company records in RevenueBase
17Exact matchBrisbane City, AustraliaHQ recorded Oct 19, 20261-106 contacts →

Exact match

“Redwood Security is a young cyber security consulting company committed to doing more for its clients.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
18Exact matchCanberra, AustraliaHQ recorded Oct 19, 202651-2005 contacts →

Exact match

“The Pearson Corporation is a locally owned Canberra IT Consulting firm that has proven experience and a track record for delivering ICT and Cyber Security services to both the…”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
19Exact matchMayfield West, AustraliaHQ recorded Oct 19, 20261-105 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 · Oct 19, 2026 · View company records in RevenueBase
20Exact matchUltimo, AustraliaHQ recorded Oct 19, 20261-105 contacts →

Exact match

“AKSON Australia is a Sydney-based IT services provider delivering innovative and reliable solutions tailored to meet the needs of businesses across diverse industries.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
21Exact matchNorth Lakes, AustraliaHQ recorded Oct 19, 20261-105 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 · Oct 19, 2026 · View company records in RevenueBase
22Exact matchMelbourne, AustraliaHQ recorded Oct 19, 202611-505 contacts →

Exact match

“Secure Alley is an IT and cybersecurity company built for the realities of today’s AI-driven digital landscape.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
23Exact matchMelbourne, AustraliaHQ recorded Oct 19, 20261-103 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 · Oct 19, 2026 · View company records in RevenueBase
24Exact matchMelbourne, AustraliaHQ recorded Oct 19, 2026201-5003 contacts →

Exact match

“ITSEC Australia & New Zealand helps organisations build resilience across IT, OT, and IoT environments.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase
25Exact matchJoondalup, AustraliaHQ recorded Oct 19, 202611-503 contacts →

Exact match

“Sapien Cyber is an Australian company providing class-leading cybersecurity and threat intelligence solutions for the protection of critical infrastructure.”

Recorded in the RevenueBase company graph · Oct 19, 2026 · View company records in RevenueBase

Showing 25 of 84 operational technology (ot) cyber security services based in Australia

See the full list, filter by size, metro and specialty, and access 309 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Operational technology (ot) cyber security services based in Australia at a glance

As of Oct 19, 2026
33.6%Verified-email coverage
11.0Average contacts per company
1-10Median size (employees)
21.4%Largest-city concentration · Melbourne
Oct 19, 2026Page data refreshed

Companies by employee count

1-10
49
11-50
26
51-200
6
201-500
2
1,001-5,000
1

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 84 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 (ot) cyber security services” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. 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 309 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 October 19, 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 (ot) cyber security services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many operational technology (ot) cyber security services are there based in Australia?

RevenueBase identified 84 company matches for operational technology (ot) cyber security services associated with Australia as of October 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?

Triskele Labs tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most operational technology (ot) cyber security services?

Melbourne leads with 18 company records, followed by Sydney (15) and Brisbane (8).

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 309 professional contacts with verified work emails tracked across these 84 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 October 19, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.