Company lists · Data refreshed September 2026

Top 25 Cybersecurity risk assessment firms based in Australia

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

Compiled by the RevenueBase Data Team Data refreshed Sep 1, 2026 656 companies tracked

RevenueBase identified 656 cybersecurity risk assessment firms headquartered in Australia as of September 2026 and tracks 6,099 professional contacts across them, including 2,483 with verified work emails and 312 with mobile numbers. Sydney is the largest hub.

This list covers cybersecurity risk assessment firms headquartered in Australia, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 1, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase Smart Search rating on every row Refreshed Sep 1, 2026 86% judged on-target in blind review

656Companies

6,099Contacts tracked

2,483Verified emails

312Mobile numbers

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The 25 largest cybersecurity risk assessment firms based in Australia

Ranked by team size

Top 25 of 656 cybersecurity risk assessment firms based in Australia, ranked by team size, largest first. Data refreshed Sep 1, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity risk assessment firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	PT Itsec Asia TBK	Partial evidence	Melbourne, Australia	201-500	387 contacts →
	Partial evidence “ITSEC Asia is a leading cybersecurity company in Indonesia, listed on the Indonesian Stock Exchange (“CYBR”), with over 400 employees across five countries.” Source: RevenueBase Database · checked Sep 1, 2026
2	Triskele Labs	Partial evidence	Melbourne, Australia	51-200	123 contacts →
	Partial evidence “Triskele Labs is one of Australia’s fastest growing cybersecurity companies.” Source: RevenueBase Database · checked Sep 1, 2026
3	Optic Security Group	Partial evidence	Broome, Australia	201-500	122 contacts →
	Partial evidence “Optic Security Group is a leading provider of converged security risk management solutions serving the needs of corporate, enterprise, and government clients across Australia and…” Source: RevenueBase Database · checked Sep 1, 2026
4	RED Sift	Indirect evidence	Surry Hills, Australia	51-200	109 contacts →
	Indirect evidence “Red Sift enables organizations to anticipate, respond to, and recover from cyber attacks while continuing to operate effectively.” Source: RevenueBase Database · checked Sep 1, 2026
5	Secutec	Partial evidence	Sydney, Australia	51-200	102 contacts →
	Partial evidence “Cybersecurity company Secutec was founded in 2005 and is considered an authority in the field of cybersecurity, threat intelligence, and incident response services tailored to…” Source: RevenueBase Database · checked Sep 1, 2026
6	Sekuro	Partial evidence	Australia	51-200	100 contacts →
	Partial evidence “Sekuro is a cyber security and digital resiliency solutions provider that helps CIOs and CISOs take a strategic approach to cyber security risk mitigation and building business…” Source: RevenueBase Database · checked Sep 1, 2026
7	Kaine Mathrick Tech	Indirect evidence	Sydney, Australia	51-200	91 contacts →
	Indirect evidence “Australia’s cyber-first Managed Service Provider and true technology partner.” Source: RevenueBase Database · checked Sep 1, 2026
8	Northbridge Systems	Partial evidence	St Leonards, Australia	51-200	70 contacts →
	Partial evidence “Northbridge is an Australian-owned cybersecurity services provider with more than 25 years’ experience delivering engineered, integrated and fully managed security services to…” Source: RevenueBase Database · checked Sep 1, 2026
9	Entersoft Security	Partial evidence	Brisbane, Australia	51-200	63 contacts →
	Partial evidence “Entersoft Security is an AI-enabled cybersecurity services firm helping modern enterprises build, ship, and operate secure digital products at scale.” Source: RevenueBase Database · checked Sep 1, 2026
10	Skillfield	Indirect evidence	Melbourne, Australia	51-200	61 contacts →
	Indirect evidence “Skillfield is a Melbourne-born Cyber Security, AI and big data solutions provider and professional services consultancy.” Source: RevenueBase Database · checked Sep 1, 2026
11	3columns	Indirect evidence	Australia	51-200	58 contacts →
	Indirect evidence “Discover 3Columns, your premier destination for cutting-edge cyber security solutions.” Source: RevenueBase Database · checked Sep 1, 2026
12	Ipsec PTY LTD	Partial evidence	Cremorne, Australia	11-50	57 contacts →
	Partial evidence “IPSec are specialists in information asset and cyber protection; security experts who know how to mitigate cyber risk by assisting in the protection of valuable intelligence…” Source: RevenueBase Database · checked Sep 1, 2026
13	Ctrl Cyber	Partial evidence	Sydney, Australia	51-200	56 contacts →
	Partial evidence “ctrl:cyber is an Australian owned and operated cybersecurity partner delivering tailored end-to-end solutions for industry-leading organisations.” Source: RevenueBase Database · checked Sep 1, 2026
14	Wipro Shelde	Indirect evidence	Melbourne, Australia	51-200	50 contacts →
	Indirect evidence “Our mission is to help our clients protect their assets, reputation, and customers from cyber threats, while also enabling them to embrace digital transformation and innovation…” Source: RevenueBase Database · checked Sep 1, 2026
15	Dimiya Tech	Partial evidence	Melbourne, Australia	51-200	50 contacts →
	Partial evidence “DIMIYA Tech is a Melbourne, Australia based- global Cybersecurity and IT services provider supporting organizations that require secure, scalable, and high-performance technology…” Source: RevenueBase Database · checked Sep 1, 2026
16	Slipstream Cyber	Indirect evidence	St Leonards, Australia	11-50	42 contacts →
	Indirect evidence “Slipstream Cyber is a business of Interactive - Australia's leading technology solutions provider.” Source: RevenueBase Database · checked Sep 1, 2026
17	Firstwave ASX FCT	Partial evidence	North Sydney, Australia	51-200	42 contacts →
	Partial evidence “FirstWave is a global cybersecurity technology company formed in 2004.” Source: RevenueBase Database · checked Sep 1, 2026
18	Vectra	Partial evidence	Melbourne, Australia	51-200	42 contacts →
	Partial evidence “Vectra, an Ensign company, is Australia’s trusted partner for security consulting, risk management, compliance, and managed services.” Source: RevenueBase Database · checked Sep 1, 2026
19	Ionize	Indirect evidence	Canberra, Australia	51-200	34 contacts →
	Indirect evidence “When it comes to security there's no shortage of companies ready to tell you about your vulnerabilities.” Source: RevenueBase Database · checked Sep 1, 2026
20	Terraeagle	Indirect evidence	Strathfield, Australia	11-50	34 contacts →
	Indirect evidence “Terraeagle is a cyber security services company providing tailor-made solutions.” Source: RevenueBase Database · checked Sep 1, 2026
21	NUEVA	Partial evidence	Sydney, Australia	51-200	30 contacts →
	Partial evidence “At Nueva, we aim to create a safer digital environment by providing innovative and customised cybersecurity solutions for our clients.” Source: RevenueBase Database · checked Sep 1, 2026
22	GCIT	Indirect evidence	Burleigh Heads, Australia	11-50	19 contacts →
	Indirect evidence “Based on the Gold Coast, GCIT provides IT security and managed services across Australia.” Source: RevenueBase Database · checked Sep 1, 2026
23	NCC Group Apac	Indirect evidence	Sydney, Australia	1,001-5,000	18 contacts →
	Indirect evidence “NCC Group exists to make the world safer and more secure.” Source: RevenueBase Database · checked Sep 1, 2026
24	Cybersecon	Indirect evidence	Melbourne, Australia	11-50	18 contacts →
	Indirect evidence “CyberSecOn is an Information security company with a presence in Australia, USA and India.” Source: RevenueBase Database · checked Sep 1, 2026
25	Retrospect Labs	Indirect evidence	Melbourne, Australia	11-50	17 contacts →
	Indirect evidence “Retrospect Labs is a specialist information security company focused on helping companies improve their security posture and resilience through realistic exercises.” Source: RevenueBase Database · checked Sep 1, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: cybersecurity risk assessment firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names cybersecurity risk assessment firms.
Partial evidence: Its own public description names part of cybersecurity risk assessment firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity risk assessment firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 656 cybersecurity risk assessment firms based in Australia

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Cybersecurity risk assessment firms based in Australia at a glance

As of Sep 1, 2026

40.7%Verified-email coverage

5.1%Mobile-number coverage

9.3Average contacts per company

1-10Median size (employees)

22.0%Largest-city concentration · Sydney

Sep 1, 2026Page data refreshed

Companies by employee count

1-10

426

11-50

178

51-200

201-500

1,001-5,000

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among cybersecurity risk assessment firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Australia whose own description of what they do matches “cybersecurity risk assessment firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names cybersecurity risk assessment firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among cybersecurity risk assessment firms, and records with no verified work email. Companies headquartered outside Australia are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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: Every listed company carries at least one verified work email, 2,483 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 1, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Cybersecurity risk assessment firms by metro

Cybersecurity risk assessment firms in Sydney144
Cybersecurity risk assessment firms in Melbourne141
Cybersecurity risk assessment firms in Brisbane61
Cybersecurity risk assessment firms in Canberra46
Cybersecurity risk assessment firms in Perth32

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names cybersecurity risk assessment firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many cybersecurity risk assessment firms are there based in Australia?

RevenueBase identified 656 cybersecurity risk assessment firms headquartered in Australia as of September 2026, matched on each company's own description of what it does rather than its industry code.

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 risk assessment firms?

Sydney leads with 144 headquartered companies, followed by Melbourne (141) and Brisbane (61).

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 2,483 verified decision-maker contacts tracked across these 656 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 1, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 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 with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.