Company lists · Data verified August 2026

Top 25 Cybersecurity companies in Australia

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 994 companies tracked

Our directory lists 994 cybersecurity companies in Australia, with 10,193 professional contacts and 4,454 email addresses. The list was last updated in August 2026, and Sydney is the single most-represented city among the companies listed.

Cybersecurity companies provide products and services that protect systems, networks, applications, devices, and data from unauthorized access, disruption, or misuse. This list covers companies that provide cybersecurity products, services, consulting, assessments, monitoring, incident response, or related protection for digital systems and data. Ranked by team size, largest first. Data current as of August 28, 2026.

994Companies

10,193Contacts tracked

4,454Verified emails

627Mobile numbers

Unlock all 994 companies Free account · no credit card · 2 minutes

The 25 largest cybersecurity companies in Australia

Ranked by team size

Top 25 of 994 cybersecurity companies 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	Centorrino Technologies	Coburg	201-500	349	207
3	Webroot	Chatswood	501-1,000	199	75
4	Virtual IT Group Vitg	Sydney	201-500	165	129
5	SAPIO	Mitchell	51-200	129	80
6	Triskele Labs	Melbourne	51-200	123	89
7	Optic Security Group	Broome	201-500	122	92
8	Infotrust	Sydney	201-500	122	81
9	RED Sift	Surry Hills	51-200	109	55
10	ARA Security	Wangara	201-500	105	69
11	Secutec	Sydney	51-200	102	37
12	Sekuro	n/a	51-200	100	70
13	Consunet PTY LTD	Adelaide	51-200	99	74
14	Ever Nimble	Fortitude Valley	51-200	98	79
15	Kaine Mathrick Tech	Sydney	51-200	91	62
16	Informatech PTY LTD	Canberra	51-200	90	36
17	Secure Agility	Sydney	51-200	87	76
18	Netmotion Software By Absolute	Sydney	501-1,000	78	35
19	Northbridge Systems	St Leonards	51-200	70	27
20	Entersoft Security	Brisbane	51-200	63	20
21	Skillfield	Melbourne	51-200	61	42
22	RED Piranha	Melbourne	51-200	58	41
23	Archtis	Barton	51-200	58	40
24	3columns	n/a	51-200	58	32
25	Practice Protect	Brisbane	51-200	54	23
26	Deploypartners	North Sydney	51-200	51	24
27	Wipro Shelde	Melbourne	51-200	50	15
28	Dimiya Tech	Melbourne	51-200	50	2

Showing 25 of 994 cybersecurity companies in Australia

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 4,454 reachable decision-makers.

Free account · no credit card

See all 994 companies

Cybersecurity companies in Australia at a glance

As of Aug 28, 2026

1-10Median size (employees)

SydneyLargest hub · 210 HQs

627Contacts with mobile numbers

46Emails re-verified in last 30 days

Companies by employee count

1-10

587

11-50

302

51-200

201-500

501-1,000

1,001-5,000

Companies by metro

Metro	Companies
Cybersecurity companies in Sydney	210
Cybersecurity companies in Melbourne	192
Cybersecurity companies in Brisbane	92
Cybersecurity companies in Canberra	48
Cybersecurity companies in Perth	43
Cybersecurity companies in Adelaide	36
Cybersecurity companies in Brisbane City	14

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 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; 46 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 companies are in the directory?

The directory lists 994 cybersecurity companies in Australia.

Which city has the most cybersecurity companies?

Sydney is the single most-represented city among the cybersecurity companies on the list.

How many contacts are available for cybersecurity companies?

The directory includes 10,193 professional contacts and 4,454 email addresses for the listed cybersecurity companies.

Ready to reach these companies? Verified emails and direct dials for all 994 cybersecurity companies in Australia. Start with a free account, no credit card.

Get the full list

Related lists

Cybersecurity companies by geography

Browse the directory

Browse: Companies home · All Australia lists · New lists

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.