Company lists · Data verified August 2026

Top 25 Cybersecurity software companies based in Australia

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 210 companies tracked

There are 210 cybersecurity software companies headquartered in Australia (RevenueBase, August 2026). RevenueBase tracks 2,767 professional contacts across them, including 937 with verified work emails and 204 with mobile numbers. Melbourne is the largest hub.

This list covers cybersecurity software companies headquartered in 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.

210Companies

2,767Contacts tracked

937Verified emails

204Mobile numbers

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The 25 largest cybersecurity software companies based in Australia

Ranked by team size

Top 25 of 210 cybersecurity software companies based in 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	PT Itsec Asia TBK	Melbourne	201-500	387	67
2	Webroot	Chatswood	501-1,000	199	75
3	Triskele Labs	Melbourne	51-200	123	89
4	RED Sift	Surry Hills	51-200	109	55
5	Secutec	Sydney	51-200	102	37
6	Northbridge Systems	St Leonards	51-200	70	27
7	Entersoft Security	Brisbane	51-200	63	20
8	RED Piranha	Melbourne	51-200	58	41
9	Ipsec PTY LTD	Cremorne	11-50	57	35
10	Deploypartners	North Sydney	51-200	51	24
11	Dimiya Tech	Melbourne	51-200	50	2
12	Defencebyte	Toongabbie	11-50	47	1
13	Emerging IT	Mulgrave	51-200	45	27
14	Sekuro Asia	Brisbane	51-200	43	11
15	Slipstream Cyber	St Leonards	11-50	42	28
16	Firstwave ASX FCT	North Sydney	51-200	42	26
17	Cythera	Cbd	11-50	42	26
18	Ionize	Canberra	51-200	34	26
19	OP Innovate	Canberra	11-50	34	21
20	Terraeagle	Strathfield	11-50	34	3
21	NSB Cyber	Brisbane	11-50	30	19
22	Cybernara	Adelaide	11-50	29	5
23	Borderless CS	Sydney	11-50	25	5
24	Wontok	Pyrmont	51-200	20	6
25	NCC Group Apac	Sydney	1,001-5,000	18	8

Showing 25 of 210 cybersecurity software companies based in Australia

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Cybersecurity software companies based in Australia at a glance

As of Aug 28, 2026

11-50Median size (employees)

MelbourneLargest hub · 43 HQs

204Contacts with mobile numbers

1Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Cybersecurity software companies by metro

Metro	Companies
Cybersecurity software companies in Melbourne	43
Cybersecurity software companies in Sydney	40
Cybersecurity software companies in Brisbane	17
Cybersecurity software companies in Perth	13
Cybersecurity software companies in Canberra	10
Cybersecurity software companies in Adelaide	4
Cybersecurity software companies in North Sydney	4

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 “cybersecurity software companies”, with match quality audited by blind human judging, and headquartered in 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; 1 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 cybersecurity software companies are there based in Australia?

There are 210 cybersecurity software companies headquartered in Australia as of August 2026 (RevenueBase).

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 software companies?

Melbourne leads with 43 headquartered companies, followed by Sydney (40) and Brisbane (17).

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 937 verified decision-maker contacts tracked across these 210 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.