Company lists · Data refreshed September 2026

Top 25 Penetration testing firms based in Melbourne, Australia

Name: Penetration testing firms based in Melbourne, Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 87 companies tracked

RevenueBase identified 87 penetration testing firms headquartered in Melbourne, Australia as of September 2026 and tracks 1,894 professional contacts across them, including 940 with verified work emails. Melbourne is the largest hub.

This list covers penetration testing firms 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 20, 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 20, 2026 86% judged on-target in blind review

87Companies

1,894Contacts tracked

940Verified emails

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The 25 largest penetration testing firms based in Melbourne, Australia

Ranked by team size

Top 25 of 87 penetration testing firms based in Melbourne, Australia, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to penetration testing firms: 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	Indirect evidence	Melbourne, AustraliaHQ checked Sep 20, 2026	51-200	123 contacts →
	Indirect evidence “Triskele Labs is one of Australia’s fastest growing cybersecurity companies.” Source: RevenueBase Database · checked Sep 20, 2026
2	Wipro Shelde	Indirect evidence	Melbourne, AustraliaHQ checked Sep 20, 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 20, 2026
3	Borderless CS	Indirect evidence	Melbourne, AustraliaHQ checked Sep 20, 2026	11-50	26 contacts →
	Indirect 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 20, 2026
4	Fortian	Indirect evidence	Melbourne, AustraliaHQ checked Sep 20, 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 20, 2026
5	Tanto Security	Indirect evidence	Melbourne, AustraliaHQ checked Sep 20, 2026	11-50	19 contacts →
	Indirect evidence “We provide offensive cyber security services to world leading organisations.” Source: RevenueBase Database · checked Sep 20, 2026
6	Cybersecon	Indirect evidence	Melbourne, AustraliaHQ checked Sep 20, 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 20, 2026
7	Morfit Group Consulting	Indirect evidence	Melbourne, AustraliaHQ checked Sep 20, 2026	51-200	15 contacts →
	Indirect evidence “Morfit Group Consulting is a pure IT Consulting and Professional Services organisation.” Source: RevenueBase Database · checked Sep 20, 2026
8	Cosive	Indirect evidence	Melbourne, AustraliaHQ checked Sep 20, 2026	11-50	13 contacts →
	Indirect evidence “We help organisations get better at Security Operations and Cyber Threat Intelligence with specialised consulting, engineering, and managed security platforms.” Source: RevenueBase Database · checked Sep 20, 2026
9	Elttam	Strong evidence	Melbourne, AustraliaHQ checked Sep 20, 2026	11-50	12 contacts →
	Strong evidence “Expert-led penetration testing, supported by AI-assisted analysis, to uncover real weaknesses and strengthen systems against real-world threats.” Source: RevenueBase Database · checked Sep 20, 2026
10	Syber Services	Indirect evidence	Melbourne, AustraliaHQ checked Sep 20, 2026	11-50	10 contacts →
	Indirect evidence “As an Australian based cyber security partner, we work with enterprises to protect what matters most and stay ahead of evolving threats.” Source: RevenueBase Database · checked Sep 20, 2026
11	Attackforge	Indirect evidence	Melbourne, AustraliaHQ checked Sep 20, 2026	11-50	8 contacts →
	Indirect evidence “AttackForge® is the No.1 provider of Pentest Management Platforms, trusted by Fortune 500.” Source: RevenueBase Database · checked Sep 20, 2026
12	Security Impossible	Indirect evidence	Melbourne, AustraliaHQ checked Sep 20, 2026	1-10	8 contacts →
	Indirect evidence “Cyber Range, SOC designing and implementation, risk and security assessment.” Source: RevenueBase Database · checked Sep 20, 2026
13	Shea Security	Partial evidence	Melbourne, AustraliaHQ checked Sep 20, 2026	1-10	7 contacts →
	Partial evidence “Operating from Melbourne, Australia, we offer security testing and training for Australia and specialised remote testing for countries including Ireland, the United Kingdom, the…” Source: RevenueBase Database · checked Sep 20, 2026
14	Proveho Networks	Indirect evidence	Melbourne, AustraliaHQ checked Sep 20, 2026	11-50	5 contacts →
	Indirect evidence “Secure computing and digital security transformation.” Source: RevenueBase Database · checked Sep 20, 2026
15	Itsec Australia NEW Zealand	Indirect evidence	Melbourne, AustraliaHQ checked Sep 20, 2026	201-500	5 contacts →
	Indirect evidence “ITSEC Australia & New Zealand helps organisations build resilience across IT, OT, and IoT environments.” Source: RevenueBase Database · checked Sep 20, 2026
16	Trusted Impact PTY LTD	Indirect evidence	Melbourne, AustraliaHQ checked Sep 20, 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 20, 2026
17	Cyberzone Global	Partial evidence	Melbourne, AustraliaHQ checked Sep 20, 2026	1-10	5 contacts →
	Partial 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 20, 2026
18	Trinity Cyber Security	Indirect evidence	Melbourne, AustraliaHQ checked Sep 20, 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 20, 2026
19	Secure Alley	Indirect evidence	Melbourne, AustraliaHQ checked Sep 20, 2026	11-50	5 contacts →
	Indirect 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 20, 2026
20	Cyber Forte	Indirect evidence	Melbourne, AustraliaHQ checked Sep 20, 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 20, 2026
21	Cyber Security HUB	Strong evidence	Melbourne, AustraliaHQ checked Sep 20, 2026	11-50	5 contacts →
	Strong evidence “At Cyber Security Hub®, we created an easier, safer and faster way to collaborate and manage your security and penetration testing projects and programs.” Source: RevenueBase Database · checked Sep 20, 2026
22	Spiral Systems Australia	Indirect evidence	Melbourne, AustraliaHQ checked Sep 20, 2026	1-10	3 contacts →
	Indirect evidence “We are a Melbourne-based boutique consulting firm specialised in Systems/Software Engineering, Cyber Security and ICT Project Management for Defence, Aerospace and…” Source: RevenueBase Database · checked Sep 20, 2026
23	Tawfik Consulting	Indirect evidence	Melbourne, AustraliaHQ checked Sep 20, 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 20, 2026
24	Stratus Security	Indirect evidence	Melbourne, AustraliaHQ checked Sep 20, 2026	1-10	3 contacts →
	Indirect 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 20, 2026
25	Nimis Cybersecurity	Strong evidence	Melbourne, AustraliaHQ checked Sep 20, 2026	1-10	2 contacts →
	Strong evidence “NIMIS Cybersecurity uses artificial intelligence to provide real time penetration testing services.” Source: RevenueBase Database · checked Sep 20, 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: penetration testing firms. 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 penetration testing firms.
Partial evidence: Its own public description names part of penetration testing firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name penetration testing firms. 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 87 penetration testing firms based in Melbourne, Australia

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Penetration testing firms based in Melbourne, Australia at a glance

As of Sep 20, 2026

49.6%Verified-email coverage

21.8Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · Melbourne

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

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 87 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 penetration testing firms, 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 “penetration testing firms”. 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 penetration testing firms), 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 penetration testing firms, 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, 940 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 20, 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.

Penetration testing firms by metro in Australia

Penetration testing firms in Melbourne87
Penetration testing firms in Sydney86
Penetration testing firms in Brisbane37

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 penetration testing firms, 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 penetration testing firms are there based in Melbourne, Australia?

RevenueBase identified 87 penetration testing firms 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 penetration testing firms?

Melbourne leads with 87 headquartered companies, followed by Sydney (86) and Brisbane (37).

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 940 verified decision-maker contacts tracked across these 87 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 20, 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.