Company lists · Data refreshed September 2026

Top 25 IT and cybersecurity audit services based in Melbourne, Australia

Name: IT and cybersecurity audit services based in Melbourne, Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 89 companies tracked

RevenueBase identified 89 IT and cybersecurity audit services headquartered in Melbourne, Australia as of September 2026 and tracks 666 professional contacts across them, including 212 with verified work emails. Melbourne is the largest hub.

This list covers IT and cybersecurity audit services headquartered in Melbourne, Australia, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 21, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 21, 2026 86% judged on-target in blind review

89Companies

666Contacts tracked

212Verified emails

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The 25 largest IT and cybersecurity audit services based in Melbourne, Australia

Ranked by team size

Top 25 of 89 IT and cybersecurity audit services based in Melbourne, Australia, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to IT and cybersecurity audit services: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Triskele Labs	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	51-200	123 contacts →
	Partial evidence “Triskele Labs is one of Australia’s fastest growing cybersecurity companies.” Source: RevenueBase Database · checked Sep 21, 2026
2	Dimiya Tech	Strong evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	51-200	50 contacts →
	Strong evidence “DIMIYA Tech is a Melbourne, Australia based- global Cybersecurity and IT services provider supporting organizations that require secure, scalable, and high-performance technology…” Source: RevenueBase Database · checked Sep 21, 2026
3	Wipro Shelde	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	51-200	47 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 21, 2026
4	Borderless CS	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	26 contacts →
	Partial evidence “About Us - Australia’s leading cybersecurity specialist, delivering comprehensive protection by Australian-based consultants only-no offshore teams- 100% cybersecurity-focused…” Source: RevenueBase Database · checked Sep 21, 2026
5	Fortian	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	25 contacts →
	Indirect evidence “Fortian is a leading Australian company specialising in cyber security, privacy, and technology risk management.” Source: RevenueBase Database · checked Sep 21, 2026
6	Cybersecon	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	18 contacts →
	Indirect evidence “CyberSecOn is an Information security company with a presence in Australia, USA and India.” Source: RevenueBase Database · checked Sep 21, 2026
7	Grc360	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	17 contacts →
	Indirect evidence “GRC360 Pvt.” Source: RevenueBase Database · checked Sep 21, 2026
8	Cyberrisk	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	11 contacts →
	Indirect evidence “Information security and technology risk management consulting - at CyberRisk we design, implement and operate information security programs to allow you to reduce and manage your…” Source: RevenueBase Database · checked Sep 21, 2026
9	Built On IT	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	1-10	9 contacts →
	Indirect evidence “Managed technology solutions.” Source: RevenueBase Database · checked Sep 21, 2026
10	Proveho Networks	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	5 contacts →
	Indirect evidence “Secure computing and digital security transformation.” Source: RevenueBase Database · checked Sep 21, 2026
11	Itsec Australia NEW Zealand	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	201-500	5 contacts →
	Partial evidence “ITSEC Australia & New Zealand helps organisations build resilience across IT, OT, and IoT environments.” Source: RevenueBase Database · checked Sep 21, 2026
12	Trusted Impact PTY LTD	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	5 contacts →
	Indirect evidence “With a singular focus on "Information Security", Trusted Impact prides itself on delivering demonstrable business outcomes by applying an independent perspective and by leveraging…” Source: RevenueBase Database · checked Sep 21, 2026
13	Cyberzone Global	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	1-10	5 contacts →
	Indirect evidence “At CyberZone Global, we provide expert cyber advisory, security testing, consulting, Artificial Intelligence and cyber security training services tailored to your organisation’s…” Source: RevenueBase Database · checked Sep 21, 2026
14	Trinity Cyber Security	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	1-10	5 contacts →
	Indirect evidence “At Trinity we are dedicated to providing our clients with the best possible customer experience while ensuring their safety and security in the digital world.” Source: RevenueBase Database · checked Sep 21, 2026
15	Secure Alley	Strong evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	5 contacts →
	Strong evidence “Secure Alley is an IT and cybersecurity company built for the realities of today’s AI-driven digital landscape.” Source: RevenueBase Database · checked Sep 21, 2026
16	Cyber Forte	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	5 contacts →
	Indirect evidence “Cyber Forte is an Australian owned Cyber Security company with headquarters in Melbourne.” Source: RevenueBase Database · checked Sep 21, 2026
17	Itgrade	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	1-10	4 contacts →
	Partial evidence “Guiding forward-thinking businesses through the digital age with specialised IT management and cyber security defences” Source: RevenueBase Database · checked Sep 21, 2026
18	Define Technologies	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	1-10	3 contacts →
	Partial evidence “It’s time your business received the IT services and solutions it deserves.” Source: RevenueBase Database · checked Sep 21, 2026
19	Tawfik Consulting	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	1-10	3 contacts →
	Indirect evidence “Tawfik Consulting is a dynamic consulting company with subject matter experts is logistics, system engineering and cyber security.” Source: RevenueBase Database · checked Sep 21, 2026
20	Stratus Security	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	1-10	3 contacts →
	Partial evidence “In a world where the digital landscape is constantly evolving and cyber threats are becoming increasingly sophisticated, it's crucial for organizations to be proactive in…” Source: RevenueBase Database · checked Sep 21, 2026
21	Pure.Security A Tesserent Company	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	51-200	2 contacts →
	Partial evidence “Pure Security is part of the Tesserent group, and is rebranding as Tesserent - Australia's largest ASX listed cybersecurity company (ASX:TNT).” Source: RevenueBase Database · checked Sep 21, 2026
22	Cyber XL	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	1-10	2 contacts →
	Indirect evidence “Products and services” Source: RevenueBase Database · checked Sep 21, 2026
23	Intec1	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	51-200	1 contacts →
	Indirect evidence “Proudly Australian-owned, InTec1 is a leading provider of professional security consulting services to the government, commercial and critical infrastructure sectors.” Source: RevenueBase Database · checked Sep 21, 2026
24	Global Sentynel	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	1 contacts →
	Indirect evidence “Global Sentynel is a consulting company that commenced operations in June 2023 in Australia, the United States, and Mexico.” Source: RevenueBase Database · checked Sep 21, 2026
25	4walls Cyber Advisory	Indirect evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	1 contacts →
	Indirect evidence “4walls helps directors, owners and executives answer three big questions: Where do we stand?” Source: RevenueBase Database · checked Sep 21, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: IT and cybersecurity audit services. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names IT and cybersecurity audit services.
Partial evidence: Its own public description names part of IT and cybersecurity audit services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name IT and cybersecurity audit services. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 89 IT and cybersecurity audit services based in Melbourne, Australia

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IT and cybersecurity audit services based in Melbourne, Australia at a glance

As of Sep 21, 2026

31.8%Verified-email coverage

7.5Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · Melbourne

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole Australia list rather than for Melbourne, so it is reported there. Company counts and contact totals on this page are exact for Melbourne, over 89 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among IT and cybersecurity audit services, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Melbourne, Australia whose own description of what they do matches “IT and cybersecurity audit services”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names IT and cybersecurity audit services), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among IT and cybersecurity audit services, and records with no verified work email. Companies headquartered outside Melbourne are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 212 across the full list. 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.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

IT and cybersecurity audit services by metro in Australia

IT and cybersecurity audit services in Melbourne89
IT and cybersecurity audit services in Sydney76
IT and cybersecurity audit services in Brisbane29

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names IT and cybersecurity audit services, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many IT and cybersecurity audit services are there based in Melbourne, Australia?

RevenueBase identified 89 IT and cybersecurity audit services headquartered in Melbourne, Australia as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Triskele Labs, headquartered in Melbourne, tops this list with the largest team on record.

Which city has the most IT and cybersecurity audit services?

Melbourne leads with 89 headquartered companies, followed by Sydney (76) and Brisbane (29).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 212 verified decision-maker contacts tracked across these 89 companies.

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 Smart Search, 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.