Company lists · Data refreshed November 2026

Top 23 Cybersecurity and defense software companies based in Australia

RevenueBase identified 255 company matches for cybersecurity and defense software companies associated with Australia as of November 2026 and tracks 7,168 professional contacts across them, including 2,357 with verified work emails. Melbourne is the largest hub.

This list covers company matches for cybersecurity and defense software companies associated with Australia, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 5, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 SmartSearch · Exact Recorded Nov 5, 2026 How this list was built
255Companies
7,168Contacts tracked
2,357Verified emails
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The 23 largest cybersecurity and defense software companies based in Australia

Ranked by team size
Top 23 of 255 company matches for cybersecurity and defense software companies based in Australia, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchScoresby, AustraliaHQ recorded Nov 5, 20261,001-5,0001,053 contacts →

Exact match

“Leidos is a Fortune 500® innovation company working to solve the world’s toughest challenges in government, intelligence, defence, aviation, border protection and health markets.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchAdelaide, AustraliaHQ recorded Nov 5, 2026201-500162 contacts →

Exact match

“Servicing Defence and Enterprise with our unique expertise in #AI, Advanced Sensing and #Simulation, Aurizn’s purpose is to push the boundaries of the known to create a more…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchMelbourne, AustraliaHQ recorded Nov 5, 202651-200121 contacts →

Exact match

“Triskele Labs is one of Australia’s fastest growing cybersecurity companies.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchAdelaide, AustraliaHQ recorded Nov 5, 202651-200100 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchSydney, AustraliaHQ recorded Nov 5, 202651-20075 contacts →

Exact match

“Northbridge is an Australian-owned cybersecurity services provider with more than 25 years’ experience delivering engineered, integrated and fully managed security services to…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchMyaree, AustraliaHQ recorded Nov 5, 202651-20060 contacts →

Exact match

“AVI provides technology-based solutions to government, defence, mining and corporate communities.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchCremorne, AustraliaHQ recorded Nov 5, 202611-5057 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchMelbourne, AustraliaHQ recorded Nov 5, 202651-20055 contacts →

Exact match

“DIMIYA Tech is a Melbourne, Australia based- global Cybersecurity and IT services provider supporting organizations that require secure, scalable, and high-performance technology…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchMelbourne Cbd, AustraliaHQ recorded Nov 5, 202611-5054 contacts →

Exact match

“Cythera’s cyber security solutions allow for the rapid deployment of Assessment, Protection, Monitoring & Response and Assurance technologies to meet the security needs of…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchCentral Business District, AustraliaHQ recorded Nov 5, 202651-20050 contacts →

Exact match

“Sekuro is a leading global cybersecurity provider that helps clients and partners strategically mitigate cyber risks and build resilient businesses.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchFyshwick, AustraliaHQ recorded Nov 5, 202651-20047 contacts →

Exact match

“Bluerydge delivers mission-secure capability, specialising in Security, Technology, Artificial Intelligence (AI), Robotics, Autonomous & Cost Imposition systems.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchMelbourne, AustraliaHQ recorded Nov 5, 202611-5044 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchMulgrave, AustraliaHQ recorded Nov 5, 202651-20044 contacts →

Exact match

“Clarity in a complex world.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchNorth Sydney, AustraliaHQ recorded Nov 5, 202651-20041 contacts →

Exact match

“FirstWave is a global cybersecurity technology company formed in 2004.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchMelbourne, AustraliaHQ recorded Nov 5, 202651-20041 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchCanberra, AustraliaHQ recorded Nov 5, 202651-20039 contacts →

Exact match

“When it comes to security there's no shortage of companies ready to tell you about your vulnerabilities.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchBrisbane, AustraliaHQ recorded Nov 5, 2026n/a35 contacts →

Exact match

“Founded by Sohail Ershadi, a distinguished cybersecurity expert with over a decade of experience in the IT industry, CyberXcel has rapidly emerged as a leader in cybersecurity…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchSydney, AustraliaHQ recorded Nov 5, 202611-5034 contacts →

Exact match

“NSB Cyber is an Australian-founded, privately owned cyber security company based in Sydney.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchNorth Sydney, AustraliaHQ recorded Nov 5, 202611-5032 contacts →

Exact match

“At Excite Cyber, we envision a world where businesses can fearlessly embrace technology and leverage the best cyber expertise for robust, outcome-focused solutions.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchSydney, AustraliaHQ recorded Nov 5, 202651-20032 contacts →

Exact match

“Nueva is an Australian owned security and technology partner.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchTorrensville, AustraliaHQ recorded Nov 5, 202611-5027 contacts →

Exact match

“RFTEQ was founded in 2017 by partners with over 150 years of combined extensive global experience in the fields of defence related Electronic Warfare (EW), Force Protection…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchReid, AustraliaHQ recorded Nov 5, 202611-5020 contacts →

Exact match

“x-RD is an award-winning Australian technology company that specialises in secure applications and platforms, systems integration and AI products and services for Defence…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchSydney, AustraliaHQ recorded Nov 5, 202611-5018 contacts →

Exact match

“Minimise the risk of a cybersecurity incident.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 23 of 255 cybersecurity and defense software companies based in Australia

See the full list, filter by size, metro and specialty, and access 2,357 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Cybersecurity and defense software companies based in Australia at a glance

As of Nov 5, 2026
32.9%Verified-email coverage
28.1Average contacts per company
1-10Median size (employees)
18.8%Largest-city concentration · Melbourne
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
131
11-50
86
51-200
25
201-500
5
1,001-5,000
5
10001+
1

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 255 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with Australia whose business descriptions match “cybersecurity and defense software companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 2,357 professional contacts with verified work emails across the full matched dataset. 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 November 5, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “cybersecurity and defense software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many cybersecurity and defense software companies are there based in Australia?

RevenueBase identified 255 company matches for cybersecurity and defense software companies associated with Australia as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Leidos Australia tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most cybersecurity and defense software companies?

Melbourne leads with 48 company records, followed by Sydney (38) and Brisbane (18).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 2,357 professional contacts with verified work emails tracked across these 255 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 5, 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 SmartSearch, 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.