Company lists · Data refreshed August 2026

Top 25 Computer security companies based in Australia

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

Compiled by the RevenueBase Data Team Data refreshed Aug 31, 2026 131 companies tracked

RevenueBase identified 131 computer security companies headquartered in Australia as of August 2026 and tracks 1,368 professional contacts across them, including 554 with verified work emails and 146 with mobile numbers. Melbourne is the largest hub.

This list covers computer security 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 August 31, 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 31, 2026 86% judged on-target in blind review

131Companies

1,368Contacts tracked

554Verified emails

146Mobile numbers

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The 25 largest computer security companies based in Australia

Ranked by team size

Top 25 of 131 computer security companies based in Australia, ranked by team size, largest first. Data refreshed Aug 31, 2026. RevenueBase Smart Search rates how each company's information relates to computer security 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	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 31, 2026
2	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 31, 2026
3	ARA Security	Partial evidence	Wangara, Australia	201-500	105 contacts →
	Partial evidence “ARA Security delivers turnkey security solutions to a number of industries across Australia.” Source: RevenueBase Database · checked Aug 31, 2026
4	RED Piranha	Indirect evidence	Melbourne, Australia	51-200	58 contacts →
	Indirect 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 31, 2026
5	Sekuro Asia	Indirect evidence	Brisbane, Australia	51-200	43 contacts →
	Indirect evidence “Sekuro is a leading global cybersecurity provider that helps clients and partners strategically mitigate cyber risks and build resilient businesses.” Source: RevenueBase Database · checked Aug 31, 2026
6	Slipstream Cyber	Indirect evidence	St Leonards, Australia	11-50	42 contacts →
	Indirect evidence “Slipstream Cyber is a business of Interactive - Australia's leading technology solutions provider.” Source: RevenueBase Database · checked Aug 31, 2026
7	Seccom Global	Partial evidence	Sydney, Australia	11-50	41 contacts →
	Partial 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 Aug 31, 2026
8	Ionize	Partial evidence	Canberra, Australia	51-200	34 contacts →
	Partial evidence “When it comes to security there's no shortage of companies ready to tell you about your vulnerabilities.” Source: RevenueBase Database · checked Aug 31, 2026
9	CSO Group	Partial evidence	Sydney, Australia	11-50	29 contacts →
	Partial evidence “CSO Group provides ICT security services and solutions to protect Australian businesses from advanced cyber threats.” Source: RevenueBase Database · checked Aug 31, 2026
10	Fortian	Partial evidence	Sydney, Australia	11-50	26 contacts →
	Partial evidence “Fortian is a leading Australian company specialising in cyber security, privacy, and technology risk management.” Source: RevenueBase Database · checked Aug 31, 2026
11	Borderless CS	Indirect evidence	Sydney, Australia	11-50	25 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 Aug 31, 2026
12	Wontok	Partial evidence	Pyrmont, Australia	51-200	20 contacts →
	Partial evidence “Wontok delivers proven data security solutions that when activated render malware inoperable.” Source: RevenueBase Database · checked Aug 31, 2026
13	CBR Cyber A Brennan Company	Partial evidence	Forrest, Australia	11-50	19 contacts →
	Partial evidence “We are Canberra's newest Cybersecurity company focusing on solutions for information security, connectivity and cloud technologies.” Source: RevenueBase Database · checked Aug 31, 2026
14	Surecity Networks	Indirect evidence	South Melbourne, Australia	11-50	19 contacts →
	Indirect evidence “SureCity Networks is an Australian Cybersecurity firm with offices in Melbourne, Sydney, Brisbane and the UK, trusted by enterprises globally.” Source: RevenueBase Database · checked Aug 31, 2026
15	Cybersecon	Partial evidence	Melbourne, Australia	11-50	18 contacts →
	Partial evidence “CyberSecOn is an Information security company with a presence in Australia, USA and India.” Source: RevenueBase Database · checked Aug 31, 2026
16	Spartans Security	Indirect evidence	Cremorne, Australia	11-50	14 contacts →
	Indirect evidence “Facing the Complexities of Cybersecurity?” Source: RevenueBase Database · checked Aug 31, 2026
17	Link Enterprise Solutions - Link	Partial evidence	Eagle Farm, Australia	51-200	14 contacts →
	Partial evidence “Link Enterprise Solutions is a brand with enormous strength and commitment to setting new standards in electronic security, technology and managed services.” Source: RevenueBase Database · checked Aug 31, 2026
18	Secgenx	Indirect evidence	Australia	11-50	14 contacts →
	Indirect evidence “Welcome to SecGenX, where safeguarding your digital assets and fortifying your business against evolving cyber threats is our passion.” Source: RevenueBase Database · checked Aug 31, 2026
19	Eset Australia	Indirect evidence	Melbourne, Australia	11-50	13 contacts →
	Indirect evidence “For more than 30 years we have been here helping to watch over and protect progress.” Source: RevenueBase Database · checked Aug 31, 2026
20	Cleared	Partial evidence	Canberra, Australia	11-50	11 contacts →
	Partial evidence “Security simplified.” Source: RevenueBase Database · checked Aug 31, 2026
21	Networx Australia	Partial evidence	Waterloo, Australia	11-50	11 contacts →
	Partial evidence “Networx Australia are Internet Security Experts, providing a wealth of experience and expertise in designing, configuring and implementing the major brands of Internet Security…” Source: RevenueBase Database · checked Aug 31, 2026
22	Datasec Solutions PTY LTD	Partial evidence	Nunawading, Australia	11-50	10 contacts →
	Partial evidence “Datasec Solutions is a cybersecurity software company that focuses on securing workflow solutions, communication channels, and edge devices.” Source: RevenueBase Database · checked Aug 31, 2026
23	Zirilio	Indirect evidence	Melbourne, Australia	11-50	10 contacts →
	Indirect evidence “With ZIRILIO on your side, the digital world just became safer.” Source: RevenueBase Database · checked Aug 31, 2026
24	Cyber Audit Team	Partial evidence	South East Queensland, Australia	11-50	10 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Aug 31, 2026
25	Cyberhub Group	Partial evidence	Sydney, Australia	11-50	9 contacts →
	Partial evidence “CyberHub was established with the aim of making Cyber Security more available to companies of all sizes.” Source: RevenueBase Database · checked Aug 31, 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: computer security 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 computer security companies.
Partial evidence: Its own public description names part of computer security companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name computer security 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 131 computer security companies based in Australia

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Computer security companies based in Australia at a glance

As of Aug 31, 2026

40.5%Verified-email coverage

10.7%Mobile-number coverage

10.4Average contacts per company

11-50Median size (employees)

22.1%Largest-city concentration · Melbourne

Aug 31, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

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 computer security 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 “computer security 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 computer security 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 computer security 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, 554 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 31, 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.

Computer security companies by metro

Computer security companies in Melbourne29
Computer security companies in Sydney28

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 computer security 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 computer security companies are there based in Australia?

RevenueBase identified 131 computer security companies headquartered in Australia as of August 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?

Webroot, headquartered in Chatswood, tops this list with the largest team on record.

Which city has the most computer security companies?

Melbourne leads with 29 headquartered companies, followed by Sydney (28) and Brisbane (8).

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 554 verified decision-maker contacts tracked across these 131 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on August 31, 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.