Company lists · Data verified August 2026

Top 25 Cybersecurity investigation companies based in Australia

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 509 companies tracked

There are 509 cybersecurity investigation companies headquartered in Australia (RevenueBase, August 2026). RevenueBase tracks 5,682 professional contacts across them, including 2,266 with verified work emails and 350 with mobile numbers. Sydney is the largest hub.

This list covers cybersecurity investigation 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.

509Companies

5,682Contacts tracked

2,266Verified emails

350Mobile numbers

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The 25 largest cybersecurity investigation companies based in Australia

Ranked by team size

Top 25 of 509 cybersecurity investigation 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	Sekuro	n/a	51-200	100	70
7	Entersoft Security	Brisbane	51-200	63	20
8	Skillfield	Melbourne	51-200	61	42
9	LKA Group	Ballajura	51-200	60	14
10	RED Piranha	Melbourne	51-200	58	41
11	Ipsec PTY LTD	Cremorne	11-50	57	35
12	Deploypartners	North Sydney	51-200	51	24
13	Wipro Shelde	Melbourne	51-200	50	15
14	Emerging IT	Mulgrave	51-200	45	27
15	Slipstream Cyber	St Leonards	11-50	42	28
16	Firstwave ASX FCT	North Sydney	51-200	42	26
17	Vectra	Melbourne	51-200	42	19
18	Ionize	Canberra	51-200	34	26
19	OP Innovate	Canberra	11-50	34	21
20	NUEVA	Sydney	51-200	30	15
21	Hashlock	Sydney	11-50	25	13
22	GCIT	Burleigh Heads	11-50	19	8
23	NCC Group Apac	Sydney	1,001-5,000	18	8
24	Cybersecon	Melbourne	11-50	18	6
25	Retrospect Labs	Melbourne	11-50	17	10

Showing 25 of 509 cybersecurity investigation companies based in Australia

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Cybersecurity investigation companies based in Australia at a glance

As of Aug 28, 2026

1-10Median size (employees)

SydneyLargest hub · 118 HQs

350Contacts with mobile numbers

4Emails re-verified in last 30 days

Companies by employee count

1-10

303

11-50

160

51-200

201-500

501-1,000

1,001-5,000

Cybersecurity investigation companies by metro

Metro	Companies
Cybersecurity investigation companies in Sydney	118
Cybersecurity investigation companies in Melbourne	99
Cybersecurity investigation companies in Brisbane	47
Cybersecurity investigation companies in Canberra	32
Cybersecurity investigation companies in Perth	32
Cybersecurity investigation companies in Adelaide	15
Cybersecurity investigation companies 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 investigation 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; 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 investigation companies are there based in Australia?

There are 509 cybersecurity investigation 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 investigation companies?

Sydney leads with 118 headquartered companies, followed by Melbourne (99) and Brisbane (47).

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 2,266 verified decision-maker contacts tracked across these 509 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.