Company lists · Data refreshed September 2026

Top 25 Cyber security companies based in Australia

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

Compiled by the RevenueBase Data Team Data refreshed Sep 14, 2026 623 companies tracked

RevenueBase identified 623 cyber security companies headquartered in Australia as of September 2026 and tracks 6,496 professional contacts across them, including 3,008 with verified work emails. Sydney is the largest hub.

This list covers cyber 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 September 14, 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 14, 2026 86% judged on-target in blind review

623Companies

6,496Contacts tracked

3,008Verified emails

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The 25 largest cyber security companies based in Australia

Ranked by team size

Top 25 of 623 cyber security companies based in Australia, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to cyber 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	Centorrino Technologies	Strong evidence	Coburg, AustraliaHQ checked Sep 14, 2026	201-500	352 contacts →
	Strong 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 Sep 14, 2026
2	Triskele Labs	Indirect evidence	Melbourne, AustraliaHQ checked Sep 14, 2026	51-200	123 contacts →
	Indirect evidence “Triskele Labs is one of Australia’s fastest growing cybersecurity companies.” Source: RevenueBase Database · checked Sep 14, 2026
3	Infotrust	Strong evidence	Sydney, AustraliaHQ checked Sep 14, 2026	201-500	122 contacts →
	Strong evidence “Infotrust (ITS) is Australia’s leading cyber security and managed technology services provider listed on the ASX.” Source: RevenueBase Database · checked Sep 14, 2026
4	Sekuro	Strong evidence	AustraliaHQ checked Sep 14, 2026	51-200	104 contacts →
	Strong 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 14, 2026
5	Ever Nimble	Strong evidence	West Perth, AustraliaHQ checked Sep 14, 2026	51-200	102 contacts →
	Strong evidence “We are your IT & Cyber Security partners.” Source: RevenueBase Database · checked Sep 14, 2026
6	Kaine Mathrick Tech	Partial evidence	Port Melbourne, AustraliaHQ checked Sep 14, 2026	51-200	93 contacts →
	Partial evidence “Australia’s cyber-first Managed Service Provider and true technology partner.” Source: RevenueBase Database · checked Sep 14, 2026
7	Secure Agility	Indirect evidence	Sydney, AustraliaHQ checked Sep 14, 2026	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 Sep 14, 2026
8	Stickmancyber	Indirect evidence	Macquarie Park, AustraliaHQ checked Sep 14, 2026	51-200	72 contacts →
	Indirect evidence “At StickmanCyber we are on a mission to create a digital world that is safe for everyone.” Source: RevenueBase Database · checked Sep 14, 2026
9	Northbridge Systems	Partial evidence	Sydney, AustraliaHQ checked Sep 14, 2026	51-200	70 contacts →
	Partial 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 Sep 14, 2026
10	3columns	Strong evidence	502, AustraliaHQ checked Sep 14, 2026	51-200	61 contacts →
	Strong evidence “Discover 3Columns, your premier destination for cutting-edge cyber security solutions.” Source: RevenueBase Database · checked Sep 14, 2026
11	Ipsec PTY LTD	Strong evidence	Cremorne, AustraliaHQ checked Sep 14, 2026	11-50	57 contacts →
	Strong evidence “IPSec are specialists in information asset and cyber protection; security experts who know how to mitigate cyber risk by assisting in the protection of valuable intelligence…” Source: RevenueBase Database · checked Sep 14, 2026
12	Deploypartners	Indirect evidence	North Sydney, AustraliaHQ checked Sep 14, 2026	51-200	51 contacts →
	Indirect evidence “DeployPartners offer unique values and benefits that enable our clients and partners to differentiate on customer service.” Source: RevenueBase Database · checked Sep 14, 2026
13	Dimiya Tech	Indirect evidence	Melbourne, AustraliaHQ checked Sep 14, 2026	51-200	50 contacts →
	Indirect 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 14, 2026
14	Wipro Shelde	Partial evidence	Melbourne, AustraliaHQ checked Sep 14, 2026	51-200	47 contacts →
	Partial 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 14, 2026
15	Emerging IT	Indirect evidence	Mulgrave, AustraliaHQ checked Sep 14, 2026	51-200	46 contacts →
	Indirect evidence “Clarity in a complex world.” Source: RevenueBase Database · checked Sep 14, 2026
16	Cythera	Strong evidence	Melbourne Cbd, AustraliaHQ checked Sep 14, 2026	11-50	42 contacts →
	Strong evidence “Cythera’s cyber security solutions allow for the rapid deployment of Assessment, Protection, Monitoring & Response and Assurance technologies to meet the security needs of…” Source: RevenueBase Database · checked Sep 14, 2026
17	Firstwave ASX FCT	Indirect evidence	North Sydney, AustraliaHQ checked Sep 14, 2026	51-200	42 contacts →
	Indirect evidence “FirstWave is a global cybersecurity technology company formed in 2004.” Source: RevenueBase Database · checked Sep 14, 2026
18	Vectra	Partial evidence	Adelaide, AustraliaHQ checked Sep 14, 2026	51-200	42 contacts →
	Partial evidence “Vectra, an Ensign company, is Australia’s trusted partner for security consulting, risk management, compliance, and managed services.” Source: RevenueBase Database · checked Sep 14, 2026
19	Seccom Global	Strong evidence	Sydney, AustraliaHQ checked Sep 14, 2026	11-50	41 contacts →
	Strong 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 14, 2026
20	Bluerydge	Indirect evidence	Fyshwick, AustraliaHQ checked Sep 14, 2026	51-200	41 contacts →
	Indirect evidence “Bluerydge delivers mission-secure capability, specialising in Cybersecurity, Technology, Artificial Intelligence (AI), and Robotics.” Source: RevenueBase Database · checked Sep 14, 2026
21	Plerion	Partial evidence	Sydney, AustraliaHQ checked Sep 14, 2026	11-50	39 contacts →
	Partial evidence “Simplify Cloud Security.” Source: RevenueBase Database · checked Sep 14, 2026
22	Softel Systems	Partial evidence	Melbourne, AustraliaHQ checked Sep 14, 2026	11-50	37 contacts →
	Partial evidence “With over 20 years in the security market for IT and Telecommunications networks, Softel has naturally migrated these skills into the Cybersecurity challenges of today.” Source: RevenueBase Database · checked Sep 14, 2026
23	Ionize	Partial evidence	Canberra, AustraliaHQ checked Sep 14, 2026	51-200	35 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 Sep 14, 2026
24	Astralas	Indirect evidence	Cremorne, AustraliaHQ checked Sep 14, 2026	51-200	35 contacts →
	Indirect evidence “Good people solving important problems.” Source: RevenueBase Database · checked Sep 14, 2026
25	Netpoleon ANZ	Partial evidence	Docklands, AustraliaHQ checked Sep 14, 2026	501-1,000	34 contacts →
	Partial evidence “Originally founded in Netpoleon Group has become a leading provider of integrated security, networking solutions and value added services throughout the APAC region.” Source: RevenueBase Database · checked Sep 14, 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: cyber 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 cyber security companies.
Partial evidence: Its own public description names part of cyber security companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cyber 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 623 cyber security companies based in Australia

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Cyber security companies based in Australia at a glance

As of Sep 14, 2026

46.3%Verified-email coverage

10.4Average contacts per company

1-10Median size (employees)

20.2%Largest-city concentration · Sydney

Sep 14, 2026Page data refreshed

Companies by employee count

1-10

359

11-50

201

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for Australia, so it is reported there. Company counts and contact totals on this page are exact for Australia, over 623 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 cyber 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 “cyber 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 cyber 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 cyber 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, 3,008 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 14, 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.

Cyber security companies by metro

Cyber security companies in Sydney126
Cyber security companies in Melbourne120
Cyber security companies in Brisbane50
Cyber security companies in Canberra32
Cyber security companies in Perth32

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 cyber 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 cyber security companies are there based in Australia?

RevenueBase identified 623 cyber security 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?

Centorrino Technologies, headquartered in Coburg, tops this list with the largest team on record.

Which city has the most cyber security companies?

Sydney leads with 126 headquartered companies, followed by Melbourne (120) and Brisbane (50).

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 3,008 verified decision-maker contacts tracked across these 623 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 14, 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.