Company lists · Data refreshed September 2026

Top 25 Vulnerability assessment companies based in Australia

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

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 70 companies tracked

RevenueBase identified 70 vulnerability assessment companies headquartered in Australia as of September 2026 and tracks 305 professional contacts across them, including 99 with verified work emails. Sydney is the largest hub.

This list covers vulnerability assessment companies 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 22, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 22, 2026 86% judged on-target in blind review

70Companies

305Contacts tracked

99Verified emails

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The 25 largest vulnerability assessment companies based in Australia

Ranked by team size

Top 25 of 70 vulnerability assessment companies based in Australia, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to vulnerability assessment companies: 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	Silentgrid Security	Indirect evidence	Sydney, AustraliaHQ checked Sep 22, 2026	11-50	23 contacts →
	Indirect evidence “SilentGrid is an offensive security consultancy with a focus on adversary simulation and penetration testing.” Source: RevenueBase Database · checked Sep 22, 2026
2	Tanto Security	Indirect evidence	Melbourne, AustraliaHQ checked Sep 22, 2026	11-50	19 contacts →
	Indirect evidence “We provide offensive cyber security services to world leading organisations.” Source: RevenueBase Database · checked Sep 22, 2026
3	Retrospect Labs	Indirect evidence	Perth, AustraliaHQ checked Sep 22, 2026	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 22, 2026
4	Spartans Security	Indirect evidence	Cremorne, AustraliaHQ checked Sep 22, 2026	11-50	14 contacts →
	Indirect evidence “Facing the Complexities of Cybersecurity?” Source: RevenueBase Database · checked Sep 22, 2026
5	Elttam	Indirect evidence	Melbourne, AustraliaHQ checked Sep 22, 2026	11-50	12 contacts →
	Indirect evidence “Expert-led penetration testing, supported by AI-assisted analysis, to uncover real weaknesses and strengthen systems against real-world threats.” Source: RevenueBase Database · checked Sep 22, 2026
6	Vicyber	Indirect evidence	Sydney, AustraliaHQ checked Sep 22, 2026	51-200	8 contacts →
	Indirect evidence “ViCyber provides cyber loss prediction, risk quantification, cyber fix and insurance raising cyber health & awareness of businesses specifically for SMEs” Source: RevenueBase Database · checked Sep 22, 2026
7	Shea Security	Indirect evidence	Melbourne, AustraliaHQ checked Sep 22, 2026	1-10	7 contacts →
	Indirect evidence “Operating from Melbourne, Australia, we offer security testing and training for Australia and specialised remote testing for countries including Ireland, the United Kingdom, the…” Source: RevenueBase Database · checked Sep 22, 2026
8	DVULN	Indirect evidence	Sydney, AustraliaHQ checked Sep 22, 2026	1-10	6 contacts →
	Indirect evidence “Founded in 2016, Dvuln is a globally CREST-certified cybersecurity firm specialising in advanced penetration testing, adversary simulation, attacker-led threat hunting, and…” Source: RevenueBase Database · checked Sep 22, 2026
9	Alchemy Security Consulting	Indirect evidence	Adelaide, AustraliaHQ checked Sep 22, 2026	1-10	5 contacts →
	Indirect evidence “Alchemy Security Consulting is committed to establishing itself as an industry leader in emulating, detecting and defending against advanced persistent threats utilizing the…” Source: RevenueBase Database · checked Sep 22, 2026
10	Intact Security PTY LTD	Partial evidence	Naremburn, AustraliaHQ checked Sep 22, 2026	1-10	5 contacts →
	Partial evidence “Intact Security provides services around; security and vulnerability testing, security breaches and investigations, security awareness and compliance.” Source: RevenueBase Database · checked Sep 22, 2026
11	Cyber Forte	Indirect evidence	Melbourne, AustraliaHQ checked Sep 22, 2026	11-50	5 contacts →
	Indirect evidence “Cyber Forte is an Australian owned Cyber Security company with headquarters in Melbourne.” Source: RevenueBase Database · checked Sep 22, 2026
12	DITNO	Indirect evidence	Sydney, AustraliaHQ checked Sep 22, 2026	11-50	4 contacts →
	Indirect evidence “Ditno helps organisations understand and reduce their Threat Exposure by focusing on the security risks that actually matter.” Source: RevenueBase Database · checked Sep 22, 2026
13	Proactive Labs	Indirect evidence	Barton, AustraliaHQ checked Sep 22, 2026	1-10	4 contacts →
	Indirect evidence “We are highly skilled and experienced cyber security professionals offering comprehensive penetration testing services to businesses and organisations.” Source: RevenueBase Database · checked Sep 22, 2026
14	Duasynt	Indirect evidence	Sydney, AustraliaHQ checked Sep 22, 2026	11-50	4 contacts →
	Indirect evidence “Privately funded information security company based in Australia.” Source: RevenueBase Database · checked Sep 22, 2026
15	Redwood Security	Indirect evidence	Brisbane City, AustraliaHQ checked Sep 22, 2026	1-10	4 contacts →
	Indirect evidence “Redwood Security is a young cyber security consulting company committed to doing more for its clients.” Source: RevenueBase Database · checked Sep 22, 2026
16	Cyber Citadel	Indirect evidence	Barangaroo, AustraliaHQ checked Sep 22, 2026	1-10	4 contacts →
	Indirect evidence “We are cyber security specialists.” Source: RevenueBase Database · checked Sep 22, 2026
17	Sapien Cyber	Indirect evidence	Joondalup, AustraliaHQ checked Sep 22, 2026	11-50	3 contacts →
	Indirect evidence “Sapien Cyber is an Australian company providing class-leading cybersecurity and threat intelligence solutions for the protection of critical infrastructure.” Source: RevenueBase Database · checked Sep 22, 2026
18	AGIX	Indirect evidence	Parkside, AustraliaHQ checked Sep 22, 2026	11-50	3 contacts →
	Indirect evidence “Discovery & Remediation are at the heart of our approach to organisational cybersecurity services AGIX is a leading cybersecurity and IT solutions provider based in Adelaide…” Source: RevenueBase Database · checked Sep 22, 2026
19	Cybliminal PTY LTD	Indirect evidence	Newcastle, AustraliaHQ checked Sep 22, 2026	1-10	2 contacts →
	Indirect evidence “Your cyber security defences occupy a liminal position at the threshold of your enterprise/cloud environments, critical business information systems, and IT assets.” Source: RevenueBase Database · checked Sep 22, 2026
20	Sectara	Partial evidence	Sydney, AustraliaHQ checked Sep 22, 2026	1-10	2 contacts →
	Partial evidence “SECTARA (Security Threat And Risk Assessor) was created for security consultants and corporate security managers frustrated with the lack of advanced security risk assessment…” Source: RevenueBase Database · checked Sep 22, 2026
21	Aurian Security	Indirect evidence	Sydney, AustraliaHQ checked Sep 22, 2026	1-10	2 contacts →
	Indirect evidence “Aurian is a leading provider of information security services in Australia.” Source: RevenueBase Database · checked Sep 22, 2026
22	Radiant Security	Indirect evidence	Brisbane City, AustraliaHQ checked Sep 22, 2026	1-10	2 contacts →
	Indirect evidence “Radiant Security is an Australian based firm focused on modern security practices primarily within the application security, cloud and infrastructure space.” Source: RevenueBase Database · checked Sep 22, 2026
23	Xigsaw	Indirect evidence	Sydney, AustraliaHQ checked Sep 22, 2026	1-10	2 contacts →
	Indirect evidence “XIGSAW IS SOLVING THE IT SECURITY PUZZLE Businesses buy on advise and desire the best outcome.” Source: RevenueBase Database · checked Sep 22, 2026
24	Cybernod	Indirect evidence	Sydney, AustraliaHQ checked Sep 22, 2026	1-10	2 contacts →
	Indirect evidence “We bring together everything that is required to inform and help you secure your presence on the internet and give you a view of how exposed your business is to cyber attacks.” Source: RevenueBase Database · checked Sep 22, 2026
25	Five Eyes Cyber	Indirect evidence	Brighton, AustraliaHQ checked Sep 22, 2026	11-50	1 contacts →
	Indirect evidence “Five Eyes Cyber provides a full and complete cyber security audit and analysis of current business structures and then provides the steps and architecture to protect their…” Source: RevenueBase Database · checked Sep 22, 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: vulnerability assessment companies. 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 vulnerability assessment companies.
Partial evidence: Its own public description names part of vulnerability assessment companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name vulnerability assessment companies. 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 70 vulnerability assessment companies based in Australia

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Vulnerability assessment companies based in Australia at a glance

As of Sep 22, 2026

32.5%Verified-email coverage

4.4Average contacts per company

1-10Median size (employees)

32.9%Largest-city concentration · Sydney

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured worldwide rather than for Australia, so it is reported there. Company counts and contact totals on this page are exact for Australia, over 70 companies.

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 vulnerability assessment companies, 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 “vulnerability assessment companies”. 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 vulnerability assessment companies), 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 vulnerability assessment companies, 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, 99 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 22, 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.

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 vulnerability assessment companies, 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 vulnerability assessment companies are there based in Australia?

RevenueBase identified 70 vulnerability assessment companies 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?

Silentgrid Security, headquartered in Sydney, tops this list with the largest team on record.

Which city has the most vulnerability assessment companies?

Sydney leads with 23 headquartered companies, followed by Melbourne (15) and Brisbane City (4).

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 99 verified decision-maker contacts tracked across these 70 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 22, 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.