Company lists · Data refreshed September 2026

Top 25 IT security audit companies based in Australia

RevenueBase identified 146 company matches for IT security audit companies associated with Australia as of September 2026 and tracks 1,075 professional contacts across them, including 287 with verified work emails. Melbourne is the largest hub.

This list covers company matches for IT security audit 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 September 21, 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 Sep 21, 2026 How this list was built
146Companies
1,075Contacts tracked
287Verified emails
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The 25 largest IT security audit companies based in Australia

Ranked by team size
Top 25 of 146 company matches for IT security audit companies based in Australia, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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 Sep 21, 202651-200123 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
2Exact matchCanberra, AustraliaHQ recorded Sep 21, 202651-20035 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 · Sep 21, 2026 · View company records in RevenueBase
3Exact matchMelbourne, AustraliaHQ recorded Sep 21, 202611-5025 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4Exact matchSydney, AustraliaHQ recorded Sep 21, 202611-5020 contacts →

Exact match

“Hashlock is the industry leading web3 security auditing firm.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5Exact matchBrisbane, AustraliaHQ recorded Sep 21, 202611-5019 contacts →

Exact match

“RightSec offers a wide range of cyber security services to meet all business needs, from our Governance, Risk and Compliance (GRC) practice to our more technical services.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6Exact matchMelbourne, AustraliaHQ recorded Sep 21, 202611-5018 contacts →

Exact match

“CyberSecOn is an Information security company with a presence in Australia, USA and India.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7Exact matchTullamarine, AustraliaHQ recorded Sep 21, 202611-5017 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 · Sep 21, 2026 · View company records in RevenueBase
8Exact matchMelbourne, AustraliaHQ recorded Sep 21, 202611-5014 contacts →

Exact match

“Sentaris (a certified B Corporation) is an Australian security services provider specialising in cyber assurance and incident response services.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9Exact matchCremorne, AustraliaHQ recorded Sep 21, 202611-5014 contacts →

Exact match

“Facing the Complexities of Cybersecurity?”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10Exact matchSouth East Queensland, AustraliaHQ recorded Sep 21, 202611-509 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 · Sep 21, 2026 · View company records in RevenueBase
11Exact matchCentral Queensland, AustraliaHQ recorded Sep 21, 20261-109 contacts →

Exact match

“Overview: Cyber Ethos is a leading cybersecurity business based in Queensland, Australia, equipping businesses with unrivalled cybersecurity solutions.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12Exact matchMelbourne, AustraliaHQ recorded Sep 21, 20261-109 contacts →

Exact match

“Our mission is simple, make cyber security accessible to all Australian businesses.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13Exact matchSunshine Coast, AustraliaHQ recorded Sep 21, 20261-108 contacts →

Exact match

“Haksec is a small cybersecurity firm based in Queensland, Australia founded by Luke Stephens (hakluke).”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14Exact matchSydney, AustraliaHQ recorded Sep 21, 202611-507 contacts →

Exact match

“IQBOX helps you pinpoint your organization’s most pressing vulnerabilities, eliminate critical threats, and implement a security program that leaves you free to focus on…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15Exact matchCanberra, AustraliaHQ recorded Sep 21, 202651-2006 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 · Sep 21, 2026 · View company records in RevenueBase
16Exact matchSydney, AustraliaHQ recorded Sep 21, 20261-106 contacts →

Exact match

“Cyberlinx is a premier cyber security solutions and services provider, we offer a comprehensive range of cyber security solutions, including, infrastructure and network security…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17Exact matchMelbourne Cbd, AustraliaHQ recorded Sep 21, 20261-106 contacts →

Exact match

“At GMAN IT our mission is to help all businesses become cyber resilient.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18Exact matchSydney, AustraliaHQ recorded Sep 21, 202611-506 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 · Sep 21, 2026 · View company records in RevenueBase
19Exact matchPoint Cook, AustraliaHQ recorded Sep 21, 20261-106 contacts →

Exact match

“At Information Security Consultants, we offer comprehensive solutions and expertise to safeguard your digital assets, mitigate risks, and ensure your information's…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20Exact matchMelbourne, AustraliaHQ recorded Sep 21, 202611-505 contacts →

Exact match

“Secure computing and digital security transformation.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21Exact matchCanberra, AustraliaHQ recorded Sep 21, 20261-105 contacts →

Exact match

“Irradiate Security is a cyber security focused organisation that aims to promote safe online practices for Australian businesses.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22Exact matchSydney, AustraliaHQ recorded Sep 21, 20261-105 contacts →

Exact match

“Fort1: Comprehensive Cybersecurity Services based in Australia.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23Exact matchMelbourne, AustraliaHQ recorded Sep 21, 20261-105 contacts →

Exact match

“At CyberZone Global, we provide expert cyber advisory, security testing, consulting, Artificial Intelligence and cyber security training services tailored to your organisation’s…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24Exact matchNaremburn, AustraliaHQ recorded Sep 21, 20261-105 contacts →

Exact match

“Intact Security provides services around; security and vulnerability testing, security breaches and investigations, security awareness and compliance.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25Exact matchMelbourne, AustraliaHQ recorded Sep 21, 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 · Sep 21, 2026 · View company records in RevenueBase

Showing 25 of 146 IT security audit companies based in Australia

See the full list, filter by size, metro and specialty, and access 287 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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IT security audit companies based in Australia at a glance

As of Sep 21, 2026
26.7%Verified-email coverage
7.4Average contacts per company
1-10Median size (employees)
24.0%Largest-city concentration · Melbourne
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
95
11-50
41
51-200
8
201-500
2

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 146 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 “IT security audit 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 287 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 September 21, 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 “IT security audit companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many IT security audit companies are there based in Australia?

RevenueBase identified 146 company matches for IT security audit companies associated with Australia as of September 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 IT security audit companies?

Melbourne leads with 35 company records, followed by Sydney (31) and Perth (9).

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 287 professional contacts with verified work emails tracked across these 146 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 September 21, 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.