Company lists · Data refreshed September 2026

Top 25 Cybersecurity service providers based in Australia

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

Compiled by the RevenueBase Data Team Data refreshed Sep 1, 2026 1,084 companies tracked

RevenueBase identified 1,084 cybersecurity service providers headquartered in Australia as of September 2026 and tracks 10,567 professional contacts across them, including 4,729 with verified work emails and 622 with mobile numbers. Sydney is the largest hub.

This list covers cybersecurity service providers 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

1,084Companies

10,567Contacts tracked

4,729Verified emails

622Mobile numbers

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The 25 largest cybersecurity service providers based in Australia

Ranked by team size

Top 25 of 1,084 cybersecurity service providers 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 service providers: 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 Sep 1, 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 Sep 1, 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 Sep 1, 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 Sep 1, 2026
5	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 Sep 1, 2026
6	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 Sep 1, 2026
7	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 Sep 1, 2026
8	NEW ERA Technology AU	Indirect evidence	Belmont, Australia	501-1,000	112 contacts →
	Indirect evidence “New Era delivers Technology Solutions that securely connect people, places, and information in a rapidly changing digital world.” Source: RevenueBase Database · checked Sep 1, 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 Sep 1, 2026
10	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 Sep 1, 2026
11	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
12	Ever Nimble	Indirect evidence	Fortitude Valley, Australia	51-200	98 contacts →
	Indirect evidence “We are your IT & Cyber Security partners.” Source: RevenueBase Database · checked Sep 1, 2026
13	Advance Vision Technology	Indirect evidence	Port Melbourne, Australia	51-200	95 contacts →
	Indirect evidence “Advance Vision Technology (AVTech) is a leading managed service provider with a focus on cyber-security, ‘making IT Happen’ for our customers since 1992.” Source: RevenueBase Database · checked Sep 1, 2026
14	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 Sep 1, 2026
15	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 Sep 1, 2026
16	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 Sep 1, 2026
17	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 Sep 1, 2026
18	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 Sep 1, 2026
19	E2e-Assure	Indirect evidence	Canberra, Australia	51-200	60 contacts →
	Indirect evidence “e2e-assure is the UK's leading specialist in Managed Threat Detection and Response through our 24/7/365 UK owned and operated Security Operations Centre (SOC).” Source: RevenueBase Database · checked Sep 1, 2026
20	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 Sep 1, 2026
21	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 Sep 1, 2026
22	Deploypartners	Indirect evidence	North Sydney, Australia	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 1, 2026
23	Dimiya Tech	Strong evidence	Melbourne, Australia	51-200	50 contacts →
	Strong 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 1, 2026
24	Oneteam IT PTY LTD	Indirect evidence	St Leonards, Australia	51-200	47 contacts →
	Indirect evidence “OneTeam IT - means you’ll be benefitting from over 60 years of collective experience in maximising return on IT investments.” Source: RevenueBase Database · checked Sep 1, 2026
25	Firstwave ASX FCT	Strong evidence	North Sydney, Australia	51-200	42 contacts →
	Strong evidence “FirstWave is a global cybersecurity technology company formed in 2004.” 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 service providers. 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 service providers.
Partial evidence: Its own public description names part of cybersecurity service providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity service providers. 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 1,084 cybersecurity service providers based in Australia

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Cybersecurity service providers based in Australia at a glance

As of Sep 1, 2026

44.8%Verified-email coverage

5.9%Mobile-number coverage

9.7Average contacts per company

1-10Median size (employees)

19.4%Largest-city concentration · Sydney

Sep 1, 2026Page data refreshed

Companies by employee count

1-10

647

11-50

333

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 service providers, 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 service providers”. 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 service providers), 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 service providers, 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, 4,729 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 service providers by metro

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 service providers, 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 service providers are there based in Australia?

RevenueBase identified 1,084 cybersecurity service providers 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 service providers?

Sydney leads with 210 headquartered companies, followed by Melbourne (192) and Brisbane (85).

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 4,729 verified decision-maker contacts tracked across these 1,084 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.