Company lists · Data verified August 2026

Top 25 Cybersecurity engineers based in Australia

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

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 491 companies tracked

There are 491 cybersecurity engineers headquartered in Australia (RevenueBase, August 2026). RevenueBase tracks 4,197 professional contacts across them, including 1,702 with verified work emails and 304 with mobile numbers. Melbourne is the largest hub.

This list covers cybersecurity engineers 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.

491Companies

4,197Contacts tracked

1,702Verified emails

304Mobile numbers

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The 25 largest cybersecurity engineers based in Australia

Ranked by team size

Top 25 of 491 cybersecurity engineers 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	Webroot	Chatswood	501-1,000	199	75
2	Triskele Labs	Melbourne	51-200	123	89
3	Optic Security Group	Broome	201-500	122	92
4	RED Sift	Surry Hills	51-200	109	55
5	Sekuro	n/a	51-200	100	70
6	Kaine Mathrick Tech	Sydney	51-200	91	62
7	Northbridge Systems	St Leonards	51-200	70	27
8	Entersoft Security	Brisbane	51-200	63	20
9	RED Piranha	Melbourne	51-200	58	41
10	Ipsec PTY LTD	Cremorne	11-50	57	35
11	Deploypartners	North Sydney	51-200	51	24
12	Wipro Shelde	Melbourne	51-200	50	15
13	Emerging IT	Mulgrave	51-200	45	27
14	Slipstream Cyber	St Leonards	11-50	42	28
15	Firstwave ASX FCT	North Sydney	51-200	42	26
16	Astralas	Cremorne	51-200	35	20
17	Ionize	Canberra	51-200	34	26
18	OP Innovate	Canberra	11-50	34	21
19	Excite Cyber	North Sydney	11-50	31	18
20	NUEVA	Sydney	51-200	30	15
21	GCIT	Burleigh Heads	11-50	19	8
22	NCC Group Apac	Sydney	1,001-5,000	18	8
23	Cybersecon	Melbourne	11-50	18	6
24	Inshield Technologies	Sydney	11-50	18	5
25	Retrospect Labs	Melbourne	11-50	17	10

Showing 25 of 491 cybersecurity engineers based in Australia

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 1,702 reachable decision-makers.

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Cybersecurity engineers based in Australia at a glance

As of Aug 28, 2026

1-10Median size (employees)

MelbourneLargest hub · 107 HQs

304Contacts with mobile numbers

2Emails re-verified in last 30 days

Companies by employee count

1-10

295

11-50

151

51-200

201-500

501-1,000

1,001-5,000

Cybersecurity engineers by metro

Metro	Companies
Cybersecurity engineers in Melbourne	107
Cybersecurity engineers in Sydney	106
Cybersecurity engineers in Brisbane	46
Cybersecurity engineers in Canberra	33
Cybersecurity engineers in Perth	25
Cybersecurity engineers in Adelaide	13
Cybersecurity engineers in Brisbane City	7

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 engineers”, 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; 2 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 engineers are there based in Australia?

There are 491 cybersecurity engineers headquartered in Australia as of August 2026 (RevenueBase).

What is the largest company on this list?

Webroot, headquartered in Chatswood, tops this list with the largest team on record.

Which city has the most cybersecurity engineers?

Melbourne leads with 107 headquartered companies, followed by Sydney (106) and Brisbane (46).

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 1,702 verified decision-maker contacts tracked across these 491 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.