Company lists · Data refreshed September 2026

Top 25 Cybersecurity audit companies based in Australia

Name: Cybersecurity audit companies based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 1, 2026 395 companies tracked

RevenueBase identified 395 cybersecurity audit companies headquartered in Australia as of September 2026 and tracks 2,708 professional contacts across them, including 1,016 with verified work emails and 122 with mobile numbers. Sydney is the largest hub.

This list covers cybersecurity audit companies headquartered in 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 1, 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 RevenueBase Smart Search rating on every row Refreshed Sep 1, 2026 86% judged on-target in blind review

395Companies

2,708Contacts tracked

1,016Verified emails

122Mobile numbers

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The 25 largest cybersecurity audit companies based in Australia

Ranked by team size

Top 25 of 395 cybersecurity audit companies based in Australia, ranked by team size, largest first. Data refreshed Sep 1, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity audit companies: 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	PT Itsec Asia TBK	Partial evidence	Melbourne, Australia	201-500	387 contacts →
	Partial evidence “ITSEC Asia is a leading cybersecurity company in Indonesia, listed on the Indonesian Stock Exchange (“CYBR”), with over 400 employees across five countries.” Source: RevenueBase Database · checked Sep 1, 2026
2	Triskele Labs	Partial evidence	Melbourne, Australia	51-200	123 contacts →
	Partial evidence “Triskele Labs is one of Australia’s fastest growing cybersecurity companies.” Source: RevenueBase Database · checked Sep 1, 2026
3	Sekuro	Indirect evidence	Australia	51-200	100 contacts →
	Indirect evidence “Sekuro is a cyber security and digital resiliency solutions provider that helps CIOs and CISOs take a strategic approach to cyber security risk mitigation and building business…” Source: RevenueBase Database · checked Sep 1, 2026
4	Entersoft Security	Partial evidence	Brisbane, Australia	51-200	63 contacts →
	Partial evidence “Entersoft Security is an AI-enabled cybersecurity services firm helping modern enterprises build, ship, and operate secure digital products at scale.” Source: RevenueBase Database · checked Sep 1, 2026
5	Wipro Shelde	Indirect evidence	Melbourne, Australia	51-200	50 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 1, 2026
6	Emerging IT	Indirect evidence	Mulgrave, Australia	51-200	45 contacts →
	Indirect evidence “Clarity in a complex world.” Source: RevenueBase Database · checked Sep 1, 2026
7	Vectra	Indirect evidence	Melbourne, Australia	51-200	42 contacts →
	Indirect evidence “Vectra, an Ensign company, is Australia’s trusted partner for security consulting, risk management, compliance, and managed services.” Source: RevenueBase Database · checked Sep 1, 2026
8	Seccom Global	Indirect evidence	Sydney, Australia	11-50	41 contacts →
	Indirect evidence “Seccom Global - The Cyber Security Company Providing excellence in service to educate, connect and protect your business Founded in 2003, Seccom Global is recognised as a leader…” Source: RevenueBase Database · checked Sep 1, 2026
9	Ionize	Indirect evidence	Canberra, Australia	51-200	34 contacts →
	Indirect evidence “When it comes to security there's no shortage of companies ready to tell you about your vulnerabilities.” Source: RevenueBase Database · checked Sep 1, 2026
10	OP Innovate	Partial evidence	Canberra, Australia	11-50	34 contacts →
	Partial evidence “Established in 2014 to defend global enterprises from the increasing challenges of organizational cybersecurity.” Source: RevenueBase Database · checked Sep 1, 2026
11	Excite Cyber	Indirect evidence	North Sydney, Australia	11-50	31 contacts →
	Indirect evidence “At Excite Cyber, we envision a world where businesses can fearlessly embrace technology and leverage the best cyber expertise for robust, outcome-focused solutions.” Source: RevenueBase Database · checked Sep 1, 2026
12	NSB Cyber	Indirect evidence	Brisbane, Australia	11-50	30 contacts →
	Indirect evidence “NSB Cyber is an Australian-founded, privately owned cyber security company based in Sydney.” Source: RevenueBase Database · checked Sep 1, 2026
13	GCIT	Indirect evidence	Burleigh Heads, Australia	11-50	19 contacts →
	Indirect evidence “Based on the Gold Coast, GCIT provides IT security and managed services across Australia.” Source: RevenueBase Database · checked Sep 1, 2026
14	Cybersecon	Indirect evidence	Melbourne, Australia	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 1, 2026
15	Sinevis	Partial evidence	Australia	11-50	17 contacts →
	Partial evidence “We are a leading cybersecurity services organization with more than a decade of proven expertise in consulting, solution implementation and managed services.” Source: RevenueBase Database · checked Sep 1, 2026
16	Intrix Cyber Security	Indirect evidence	Sydney, Australia	11-50	16 contacts →
	Indirect evidence “Intrix Cyber Security protect businesses with our Information Security Services.” Source: RevenueBase Database · checked Sep 1, 2026
17	Diesec	Indirect evidence	Sydney, Australia	51-200	15 contacts →
	Indirect evidence “DIESEC, founded by Carl Dietzel in 2009, is dedicated to securing your most valuable asset - your data.” Source: RevenueBase Database · checked Sep 1, 2026
18	Krash Consulting	Indirect evidence	Adelaide, Australia	11-50	15 contacts →
	Indirect evidence “At Krash Consulting, we have led in safeguarding client's data for over a decade.” Source: RevenueBase Database · checked Sep 1, 2026
19	Spartans Security	Partial evidence	Cremorne, Australia	11-50	14 contacts →
	Partial evidence “Facing the Complexities of Cybersecurity?” Source: RevenueBase Database · checked Sep 1, 2026
20	Morrisec	Indirect evidence	Sydney, Australia	11-50	14 contacts →
	Indirect evidence “Morrisec provides tailored security strategies and services that align with each company’s specific threat landscape, risk profile, and strategic goals.” Source: RevenueBase Database · checked Sep 1, 2026
21	Parabellum	Indirect evidence	Melbourne, Australia	11-50	14 contacts →
	Indirect evidence “At Parabellum, we help organisations see clearly and act confidently in a complex digital world.” Source: RevenueBase Database · checked Sep 1, 2026
22	Forensic IT	Indirect evidence	Melbourne, Australia	11-50	12 contacts →
	Indirect evidence “Forensic IT is a specialised cyber security firm with expertise in Digital Forensics and Incident Response (DFIR), and securing Industrial Control Systems (CIS).” Source: RevenueBase Database · checked Sep 1, 2026
23	Cyberrisk	Indirect evidence	Melbourne, Australia	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 1, 2026
24	Cleared	Indirect evidence	Canberra, Australia	11-50	11 contacts →
	Indirect evidence “Security simplified.” Source: RevenueBase Database · checked Sep 1, 2026
25	Cyberhub Group	Indirect evidence	Sydney, Australia	11-50	9 contacts →
	Indirect evidence “CyberHub was established with the aim of making Cyber Security more available to companies of all sizes.” Source: RevenueBase Database · checked Sep 1, 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: cybersecurity audit companies. 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 cybersecurity audit companies.
Partial evidence: Its own public description names part of cybersecurity audit companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity audit companies. 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 395 cybersecurity audit companies based in Australia

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Cybersecurity audit companies based in Australia at a glance

As of Sep 1, 2026

37.5%Verified-email coverage

4.5%Mobile-number coverage

6.9Average contacts per company

1-10Median size (employees)

23.5%Largest-city concentration · Sydney

Sep 1, 2026Page data refreshed

Companies by employee count

1-10

251

11-50

117

51-200

201-500

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 cybersecurity audit companies, 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 Australia whose own description of what they do matches “cybersecurity audit companies”. 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 cybersecurity audit companies), 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 cybersecurity audit companies, and records with no verified work email. Companies headquartered outside Australia 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, 1,016 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 1, 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.

Cybersecurity audit companies by metro

Cybersecurity audit companies in Sydney93
Cybersecurity audit companies in Melbourne76
Cybersecurity audit companies in Brisbane31
Cybersecurity audit companies in Canberra26

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 cybersecurity audit companies, 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 cybersecurity audit companies are there based in Australia?

RevenueBase identified 395 cybersecurity audit companies headquartered in 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?

PT Itsec Asia TBK, headquartered in Melbourne, tops this list with the largest team on record.

Which city has the most cybersecurity audit companies?

Sydney leads with 93 headquartered companies, followed by Melbourne (76) and Brisbane (31).

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 1,016 verified decision-maker contacts tracked across these 395 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 1, 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.