Company lists · Data verified August 2026

Top 25 Application security consulting firms based in Sydney, Australia

Name: Application security consulting firms based in Sydney, Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 59 companies tracked

There are 59 application security consulting firms headquartered in Sydney, Australia (RevenueBase, August 2026). RevenueBase tracks 306 professional contacts across them, including 125 with verified work emails and 13 with mobile numbers. Sydney is the largest hub.

This list covers application security consulting firms headquartered in Sydney, Australia, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

59Companies

306Contacts tracked

125Verified emails

13Mobile numbers

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The 25 largest application security consulting firms based in Sydney, Australia

Ranked by team size

Top 25 of 59 application security consulting firms based in Sydney, Australia, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Fortian	Sydney	11-50	26	20
2	Gridware	Sydney	11-50	25	10
3	Silentgrid Security	Sydney	11-50	22	12
4	Threat Intelligence	Sydney	11-50	19	1
5	Tanto Security	Sydney	11-50	18	10
6	Diesec	Sydney	51-200	15	9
7	Sentaris	Sydney	11-50	14	9
8	Galah Cyber	Sydney	11-50	12	6
9	Volkis	Sydney	11-50	11	5
10	Cyberhub Group	Sydney	11-50	9	3
11	Cybra Security	Sydney	1-10	9	2
12	DVULN	Sydney	1-10	7	4
13	Iqbox PTY LTD	Sydney	11-50	7	1
14	RED Cursor	Sydney	1-10	6	5
15	Cyber Citadel	Sydney	1-10	5	2
16	Nsaa Security	Sydney	1-10	5	1
17	CYBIZ	Sydney	1-10	4	4
18	Patterned Security	Sydney	1-10	4	3
19	Covertthreat	Sydney	11-50	3	1
20	Sectara	Sydney	1-10	2	2
21	Undark Solutions Undark.io	Sydney	1-10	2	2
22	Aurian Security	Sydney	1-10	2	2
23	Cybernod	Sydney	1-10	2	1
24	Xigsaw	Sydney	1-10	2	1
25	Aykira Internet Solutions	Sydney	1-10	2	1

Showing 25 of 59 application security consulting firms based in Sydney, Australia

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Application security consulting firms based in Sydney, Australia at a glance

As of Aug 28, 2026

1-10Median size (employees)

SydneyLargest hub · 59 HQs

13Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

Application security consulting firms by metro in Australia

Metro	Companies
Application security consulting firms in Sydney	59
Application security consulting firms in Melbourne	52
Application security consulting firms in Canberra	18
Application security consulting firms in Brisbane	14
Application security consulting firms in Perth	9
Application security consulting firms in Brisbane City	6
Application security consulting firms in Adelaide	6

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “application security consulting firms”, with match quality audited by blind human judging, and headquartered in Sydney, Australia.
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: Contact records re-verify on a rolling cadence; 0 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many application security consulting firms are there based in Sydney, Australia?

There are 59 application security consulting firms headquartered in Sydney, Australia as of August 2026 (RevenueBase).

What is the largest company on this list?

Fortian, headquartered in Sydney, tops this list with the largest team on record.

Which city has the most application security consulting firms?

Sydney leads with 59 headquartered companies, followed by Melbourne (52) and Canberra (18).

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 125 verified decision-maker contacts tracked across these 59 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.