Company lists · Data refreshed August 2026

Top 25 Cybersecurity companies based in Australia

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

Compiled by the RevenueBase Data Team Data refreshed Aug 29, 2026 994 companies tracked

Our directory lists 994 cybersecurity companies based in Australia, with 10,193 professional contacts and 4,454 email addresses. The list was last updated in August 2026, and Sydney is the single most-represented city among the companies listed.

Cybersecurity companies provide products and services that protect systems, networks, applications, devices, and data from unauthorized access, disruption, or misuse. This list covers companies that provide cybersecurity products, services, consulting, assessments, monitoring, incident response, or related protection for digital systems and data. Ranked by team size, largest first. Data current as of August 29, 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 Aug 29, 2026 86% judged on-target in blind review

994Companies

10,193Contacts tracked

4,454Verified emails

627Mobile numbers

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The 25 largest cybersecurity companies based in Australia

Ranked by team size

Top 25 of 994 cybersecurity companies based in Australia, ranked by team size, largest first. Data refreshed Aug 29, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity 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	Strong evidence	Melbourne, Australia	201-500	387 contacts →
	Strong 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 Aug 29, 2026
2	Centorrino Technologies	Indirect evidence	Coburg, Australia	201-500	349 contacts →
	Indirect evidence “We are an Australian-owned, full-service ICT Solutions and Cyber Security provider with a locally based team of over 450 passionate Aussies.” Source: RevenueBase Database · checked Aug 29, 2026
3	Webroot	Indirect evidence	Chatswood, Australia	501-1,000	199 contacts →
	Indirect evidence “Webroot, an OpenText company, was the first to harness the cloud and artificial intelligence to stop zero-day threats in real time.” Source: RevenueBase Database · checked Aug 29, 2026
4	Virtual IT Group Vitg	Strong evidence	Sydney, Australia	201-500	165 contacts →
	Strong evidence “Virtual IT Group is Australia & New Zealand's leading managed IT cybersecurity provider.” Source: RevenueBase Database · checked Aug 29, 2026
5	SAPIO	Indirect evidence	Mitchell, Australia	51-200	129 contacts →
	Indirect evidence “We are Sapio.” Source: RevenueBase Database · checked Aug 29, 2026
6	Triskele Labs	Strong evidence	Melbourne, Australia	51-200	123 contacts →
	Strong evidence “Triskele Labs is one of Australia’s fastest growing cybersecurity companies.” Source: RevenueBase Database · checked Aug 29, 2026
7	Optic Security Group	Indirect evidence	Broome, Australia	201-500	122 contacts →
	Indirect evidence “Optic Security Group is a leading provider of converged security risk management solutions serving the needs of corporate, enterprise, and government clients across Australia and…” Source: RevenueBase Database · checked Aug 29, 2026
8	Infotrust	Indirect evidence	Sydney, Australia	201-500	122 contacts →
	Indirect evidence “Infotrust (ITS) is Australia’s leading cyber security and managed technology services provider listed on the ASX.” Source: RevenueBase Database · checked Aug 29, 2026
9	RED Sift	Indirect evidence	Surry Hills, Australia	51-200	109 contacts →
	Indirect evidence “Red Sift enables organizations to anticipate, respond to, and recover from cyber attacks while continuing to operate effectively.” Source: RevenueBase Database · checked Aug 29, 2026
10	ARA Security	Indirect evidence	Wangara, Australia	201-500	105 contacts →
	Indirect evidence “ARA Security delivers turnkey security solutions to a number of industries across Australia.” Source: RevenueBase Database · checked Aug 29, 2026
11	Secutec	Strong evidence	Sydney, Australia	51-200	102 contacts →
	Strong evidence “Cybersecurity company Secutec was founded in 2005 and is considered an authority in the field of cybersecurity, threat intelligence, and incident response services tailored to…” Source: RevenueBase Database · checked Aug 29, 2026
12	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 Aug 29, 2026
13	Consunet PTY LTD	Indirect evidence	Adelaide, Australia	51-200	99 contacts →
	Indirect evidence “Consunet is 100% Australian-owned and operated, with 20 years of market participation resulting in capability and capacity to lead major projects as a trusted industry partner to…” Source: RevenueBase Database · checked Aug 29, 2026
14	Ever Nimble	Indirect evidence	Fortitude Valley, Australia	51-200	98 contacts →
	Indirect evidence “We are your IT & Cyber Security partners.” Source: RevenueBase Database · checked Aug 29, 2026
15	Kaine Mathrick Tech	Indirect evidence	Sydney, Australia	51-200	91 contacts →
	Indirect evidence “Australia’s cyber-first Managed Service Provider and true technology partner.” Source: RevenueBase Database · checked Aug 29, 2026
16	Informatech PTY LTD	Indirect evidence	Canberra, Australia	51-200	90 contacts →
	Indirect evidence “Informatech is a veteran led business and specialises in ICT within Defence.” Source: RevenueBase Database · checked Aug 29, 2026
17	Secure Agility	Indirect evidence	Sydney, Australia	51-200	87 contacts →
	Indirect evidence “Secure Agility is a Australian-based technology partner specialising in secure managed IT services for NSW government, enterprise and mid-market organisations.” Source: RevenueBase Database · checked Aug 29, 2026
18	Netmotion Software By Absolute	Indirect evidence	Sydney, Australia	501-1,000	78 contacts →
	Indirect evidence “Absolute Security fully acquired NetMotion in July 2021.” Source: RevenueBase Database · checked Aug 29, 2026
19	Northbridge Systems	Strong evidence	St Leonards, Australia	51-200	70 contacts →
	Strong evidence “Northbridge is an Australian-owned cybersecurity services provider with more than 25 years’ experience delivering engineered, integrated and fully managed security services to…” Source: RevenueBase Database · checked Aug 29, 2026
20	Entersoft Security	Strong evidence	Brisbane, Australia	51-200	63 contacts →
	Strong 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 Aug 29, 2026
21	Skillfield	Indirect evidence	Melbourne, Australia	51-200	61 contacts →
	Indirect evidence “Skillfield is a Melbourne-born Cyber Security, AI and big data solutions provider and professional services consultancy.” Source: RevenueBase Database · checked Aug 29, 2026
22	RED Piranha	Strong evidence	Melbourne, Australia	51-200	58 contacts →
	Strong evidence “Australia’s leading developer and manufacturer of advanced cybersecurity technology, Red Piranha delivers next-generation cyber defence solutions designed to protect modern…” Source: RevenueBase Database · checked Aug 29, 2026
23	Archtis	Indirect evidence	Barton, Australia	51-200	58 contacts →
	Indirect evidence “archTIS Limited (ASX:AR9, OTCQB:ARHLF) is a global provider of data-centric security solutions for the secure collaboration of sensitive information.” Source: RevenueBase Database · checked Aug 29, 2026
24	3columns	Indirect evidence	Australia	51-200	58 contacts →
	Indirect evidence “Discover 3Columns, your premier destination for cutting-edge cyber security solutions.” Source: RevenueBase Database · checked Aug 29, 2026
25	Practice Protect	Indirect evidence	Brisbane, Australia	51-200	54 contacts →
	Indirect evidence “Supporting accounting professionals, Practice Protect is the largest cyber security platform for the modern accounting firm.” Source: RevenueBase Database · checked Aug 29, 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 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 companies.
Partial evidence: Its own public description names part of cybersecurity companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity 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 994 cybersecurity companies based in Australia

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Cybersecurity companies based in Australia at a glance

As of Aug 29, 2026

43.7%Verified-email coverage

6.2%Mobile-number coverage

10.3Average contacts per company

1-10Median size (employees)

21.1%Largest-city concentration · Sydney

Aug 29, 2026Page data refreshed

Companies by employee count

1-10

587

11-50

302

51-200

201-500

501-1,000

1,001-5,000

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 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 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 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 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, 4,454 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 August 29, 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 companies by metro

Frequently asked

How many cybersecurity companies are in the directory?

The directory lists 994 cybersecurity companies based in Australia.

Which city has the most cybersecurity companies?

Sydney is the single most-represented city among the cybersecurity companies on the list.

How many contacts are available for cybersecurity companies?

The directory includes 10,193 professional contacts and 4,454 email addresses for the listed cybersecurity companies.

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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.