Company lists · Data verified August 2026

Top 25 Cybersecurity staffing based in Australia

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 505 companies tracked

There are 505 cybersecurity staffing headquartered in Australia (RevenueBase, August 2026). RevenueBase tracks 6,366 professional contacts across them, including 2,613 with verified work emails and 390 with mobile numbers. Sydney is the largest hub.

This list covers cybersecurity staffing 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.

505Companies

6,366Contacts tracked

2,613Verified emails

390Mobile numbers

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The 25 largest cybersecurity staffing based in Australia

Ranked by team size

Top 25 of 505 cybersecurity staffing 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	Centorrino Technologies	Coburg	201-500	349	207
3	Webroot	Chatswood	501-1,000	199	75
4	Triskele Labs	Melbourne	51-200	123	89
5	Infotrust	Sydney	201-500	122	81
6	RED Sift	Surry Hills	51-200	109	55
7	Aucyber	Fortitude Valley	51-200	105	5
8	Secutec	Sydney	51-200	102	37
9	Sekuro	n/a	51-200	100	70
10	Kaine Mathrick Tech	Sydney	51-200	91	62
11	Northbridge Systems	St Leonards	51-200	70	27
12	Entersoft Security	Brisbane	51-200	63	20
13	RED Piranha	Melbourne	51-200	58	41
14	Deploypartners	North Sydney	51-200	51	24
15	Wipro Shelde	Melbourne	51-200	50	15
16	Dimiya Tech	Melbourne	51-200	50	2
17	Emerging IT	Mulgrave	51-200	45	27
18	Firstwave ASX FCT	North Sydney	51-200	42	26
19	Bluerydge	Fyshwick	51-200	39	28
20	Powernet IT Solutions	Eight Mile Plains	51-200	39	16
21	Astralas	Cremorne	51-200	35	20
22	Ionize	Canberra	51-200	34	26
23	NUEVA	Sydney	51-200	30	15
24	NCC Group Apac	Sydney	1,001-5,000	18	8
25	Diesec	Sydney	51-200	15	9

Showing 25 of 505 cybersecurity staffing based in Australia

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 2,613 reachable decision-makers.

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Cybersecurity staffing based in Australia at a glance

As of Aug 28, 2026

1-10Median size (employees)

SydneyLargest hub · 113 HQs

390Contacts with mobile numbers

4Emails re-verified in last 30 days

Companies by employee count

1-10

287

11-50

157

51-200

201-500

501-1,000

1,001-5,000

Cybersecurity staffing by metro

Metro	Companies
Cybersecurity staffing in Sydney	113
Cybersecurity staffing in Melbourne	102
Cybersecurity staffing in Brisbane	44
Cybersecurity staffing in Perth	31
Cybersecurity staffing in Canberra	31
Cybersecurity staffing in Adelaide	15
Cybersecurity staffing in Brisbane City	12

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 staffing”, 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; 4 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 staffing are there based in Australia?

There are 505 cybersecurity staffing 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 staffing?

Sydney leads with 113 headquartered companies, followed by Melbourne (102) and Brisbane (44).

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 2,613 verified decision-maker contacts tracked across these 505 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.