Company lists · Data refreshed November 2026

Top 17 Operational technology auditing companies based in Australia

RevenueBase identified 38 company matches for operational technology auditing companies associated with Australia as of November 2026 and tracks 212 professional contacts across them, including 94 with verified work emails. Melbourne is the largest hub.

This list covers company matches for operational technology auditing 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 6, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 6, 2026 How this list was built
38Companies
212Contacts tracked
94Verified emails
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The 17 largest operational technology auditing companies based in Australia

Ranked by team size
Top 17 of 38 company matches for operational technology auditing companies based in Australia, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 matchSydney, AustraliaHQ recorded Nov 6, 202611-5027 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 6, 2026 · View company records in RevenueBase
2Exact matchBraddon, AustraliaHQ recorded Nov 6, 202651-20020 contacts →

Exact match

“Viden is a leading Australian cyber security consultancy and cyber physical systems and digital forensics testing laboratory.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchSouth Yarra, AustraliaHQ recorded Nov 6, 202611-5019 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchSydney, AustraliaHQ recorded Nov 6, 202611-508 contacts →

Exact match

“Vertex Cyber Security provides an extensive Cyber Security capability of Technology and Security Services for organisations across Sydney.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchBrisbane, AustraliaHQ recorded Nov 6, 202611-507 contacts →

Exact match

“dotSec is a professional cyber security organisation that was founded in on a single premise: A business that treats security as a strategic asset should be able to operate with…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchBrisbane, AustraliaHQ recorded Nov 6, 202651-2007 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 6, 2026 · View company records in RevenueBase
7Exact matchMelbourne, AustraliaHQ recorded Nov 6, 202611-506 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 · Nov 6, 2026 · View company records in RevenueBase
8Exact matchMelbourne, AustraliaHQ recorded Nov 6, 202611-505 contacts →

Exact match

“Secure computing and digital security transformation.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchBrisbane, AustraliaHQ recorded Nov 6, 20261-105 contacts →

Exact match

“Acumenis is an independent Australian cyber security consultancy delivering senior-led testing, assurance, and advisory to organisations across Australia and internationally.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchCanberra, AustraliaHQ recorded Nov 6, 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 · Nov 6, 2026 · View company records in RevenueBase
11Exact matchMelbourne, AustraliaHQ recorded Nov 6, 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 · Nov 6, 2026 · View company records in RevenueBase
12Exact matchSydney, AustraliaHQ recorded Nov 6, 20261-102 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 6, 2026 · View company records in RevenueBase
13Exact matchCanberra, AustraliaHQ recorded Nov 6, 20261-101 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 6, 2026 · View company records in RevenueBase
14Exact matchMelbourne, AustraliaHQ recorded Nov 6, 20261-101 contacts →

Exact match

“NexJen is a consultancy that specializes in the collaborative evaluation of an organization’s cybersecurity maturity.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchPort Melbourne, AustraliaHQ recorded Nov 6, 20261-101 contacts →

Exact match

“Cyber Risk Advisors Ltd Pty specialises in cyber security and technology risk advisory to boards, board risk committees, executive management including CEOs, CIOs, CISOs, and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16Exact matchMilton, AustraliaHQ recorded Nov 6, 20261-101 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 6, 2026 · View company records in RevenueBase
17Exact matchSurry Hills, AustraliaHQ recorded Nov 6, 20261-101 contacts →

Exact match

“At Let's Go Cyber, our mission is to empower organisations to thrive securely by informing business decisions to manage information security, cybersecurity, and privacy risk, by…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 17 of 38 operational technology auditing companies based in Australia

See the full list, filter by size, metro and specialty, and access 94 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Operational technology auditing companies based in Australia at a glance

As of Nov 6, 2026
44.3%Verified-email coverage
5.6Average contacts per company
1-10Median size (employees)
23.7%Largest-city concentration · Melbourne
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
21
11-50
12
51-200
4
201-500
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 38 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 auditing 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 94 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on November 6, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

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 auditing companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many operational technology auditing companies are there based in Australia?

RevenueBase identified 38 company matches for operational technology auditing 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?

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

Which city has the most operational technology auditing companies?

Melbourne leads with 9 company records, followed by Sydney (8) and Canberra (4).

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 94 professional contacts with verified work emails tracked across these 38 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 6, 2026.

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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.