Company lists · Data refreshed September 2026

Top 13 Application security companies based in Australia

RevenueBase identified 37 application security companies headquartered in Australia as of September 2026 and tracks 269 professional contacts across them, including 66 with verified work emails. Sydney is the largest hub.

This list covers application 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
37Companies
269Contacts tracked
66Verified emails
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The 13 largest application security companies based in Australia

Ranked by team size
Top 13 of 37 application 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 application 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidence502, AustraliaHQ checked Sep 14, 202651-20061 contacts →

Partial evidence

“Discover 3Columns, your premier destination for cutting-edge cyber security solutions.”

Source: RevenueBase Database · checked Sep 14, 2026
2Indirect evidenceMelbourne, AustraliaHQ checked Sep 14, 202611-5020 contacts →

Indirect evidence

“We help software teams maximise profits by shipping software with zero bugs & zero known vulnerabilities.”

Source: RevenueBase Database · checked Sep 14, 2026
3Indirect evidenceSydney, AustraliaHQ checked Sep 14, 202611-5019 contacts →

Indirect evidence

“Threat Intelligence is different.”

Source: RevenueBase Database · checked Sep 14, 2026
4Partial evidenceMelbourne, AustraliaHQ checked Sep 14, 202611-5018 contacts →

Partial evidence

“CyberSecOn is an Information security company with a presence in Australia, USA and India.”

Source: RevenueBase Database · checked Sep 14, 2026
5Partial evidenceMelbourne, AustraliaHQ checked Sep 14, 202611-505 contacts →

Partial evidence

“At Cyber Security Hub®, we created an easier, safer and faster way to collaborate and manage your security and penetration testing projects and programs.”

Source: RevenueBase Database · checked Sep 14, 2026
6Partial evidenceSydney, AustraliaHQ checked Sep 14, 202611-504 contacts →

Partial evidence

“Privately funded information security company based in Australia.”

Source: RevenueBase Database · checked Sep 14, 2026
7Partial evidenceBarangaroo, AustraliaHQ checked Sep 14, 20261-104 contacts →

Partial evidence

“We are cyber security specialists.”

Source: RevenueBase Database · checked Sep 14, 2026
8Indirect evidenceParkside, AustraliaHQ checked Sep 14, 202611-503 contacts →

Indirect evidence

“Discovery & Remediation are at the heart of our approach to organisational cybersecurity services AGIX is a leading cybersecurity and IT solutions provider based in Adelaide…”

Source: RevenueBase Database · checked Sep 14, 2026
9Indirect evidenceSydney, AustraliaHQ checked Sep 14, 20261-102 contacts →

Indirect evidence

“Core Sentinel: Australia’s Premier Penetration Testing & Cybersecurity Experts.”

Source: RevenueBase Database · checked Sep 14, 2026
10Strong evidenceBrisbane City, AustraliaHQ checked Sep 14, 20261-102 contacts →

Strong evidence

“Radiant Security is an Australian based firm focused on modern security practices primarily within the application security, cloud and infrastructure space.”

Source: RevenueBase Database · checked Sep 14, 2026
11Indirect evidenceMelbourne, AustraliaHQ checked Sep 14, 202611-501 contacts →

Indirect evidence

“Global Sentynel is a consulting company that commenced operations in June 2023 in Australia, the United States, and Mexico.”

Source: RevenueBase Database · checked Sep 14, 2026
12Partial evidenceCanberra, AustraliaHQ checked Sep 14, 20261-101 contacts →

Partial evidence

“Cyberwhip is specialised in penetration testing of IT infrastructure, web, and mobile applications.”

Source: RevenueBase Database · checked Sep 14, 2026
13Indirect evidenceCanberra, AustraliaHQ checked Sep 14, 20261-101 contacts →

Indirect evidence

“Vulnetix solves AppSec complexity for large organisations so everyone – from CISO to engineer – can see what really matters and have more time to work on it.”

Source: RevenueBase Database · checked Sep 14, 2026

Showing 13 of 37 application security companies based in Australia

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Application security companies based in Australia at a glance

As of Sep 14, 2026
24.5%Verified-email coverage
7.3Average contacts per company
1-10Median size (employees)
24.3%Largest-city concentration · Sydney
Sep 14, 2026Page data refreshed

Companies by employee count

1-10
19
11-50
15
51-200
3

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 37 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 application 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 “application 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 application 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 application 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, 66 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.

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 application 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 application security companies are there based in Australia?

RevenueBase identified 37 application 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?

3columns, headquartered in Australia, tops this list with the largest team on record.

Which city has the most application security companies?

Sydney leads with 9 headquartered companies, followed by Melbourne (8) and Canberra (4).

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 66 verified decision-maker contacts tracked across these 37 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.