Company lists · Data refreshed September 2026

Top 25 Cybersecurity incident response firms based in Sydney, Australia

Name: Cybersecurity incident response firms based in Sydney, Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 10, 2026 79 companies tracked

RevenueBase identified 79 cybersecurity incident response firms headquartered in Sydney, Australia as of September 2026 and tracks 541 professional contacts across them, including 202 with verified work emails and 27 with mobile numbers. Sydney is the largest hub.

This list covers cybersecurity incident response firms headquartered in Sydney, 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 10, 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 10, 2026 86% judged on-target in blind review

79Companies

541Contacts tracked

202Verified emails

27Mobile numbers

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The 25 largest cybersecurity incident response firms based in Sydney, Australia

Ranked by team size

Top 25 of 79 cybersecurity incident response firms based in Sydney, Australia, ranked by team size, largest first. Data refreshed Sep 10, 2026. RevenueBase Smart Search rates how each company's information relates to cybersecurity incident response 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	Northbridge Systems	Partial evidence	Sydney, AustraliaHQ checked Sep 10, 2026	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 10, 2026
2	Seccom Global	Indirect evidence	Sydney, AustraliaHQ checked Sep 10, 2026	11-50	41 contacts →
	Indirect evidence “Seccom Global - The Cyber Security Company Providing excellence in service to educate, connect and protect your business Founded in 2003, Seccom Global is recognised as a leader…” Source: RevenueBase Database · checked Sep 10, 2026
3	NSB Cyber	Indirect evidence	Sydney, AustraliaHQ checked Sep 10, 2026	11-50	33 contacts →
	Indirect evidence “NSB Cyber is an Australian-founded, privately owned cyber security company based in Sydney.” Source: RevenueBase Database · checked Sep 10, 2026
4	Datcom Cloud	Strong evidence	Sydney, AustraliaHQ checked Sep 10, 2026	11-50	26 contacts →
	Strong evidence “Minimise the risk of a cybersecurity incident.” Source: RevenueBase Database · checked Sep 10, 2026
5	Gridware	Indirect evidence	Sydney, AustraliaHQ checked Sep 10, 2026	11-50	25 contacts →
	Indirect evidence “For most organisations in Australia, a data breach can be more than a PR disaster, it could be the final chapter.” Source: RevenueBase Database · checked Sep 10, 2026
6	Silentgrid Security	Indirect evidence	Sydney, AustraliaHQ checked Sep 10, 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 10, 2026
7	Razilio	Partial evidence	Sydney, AustraliaHQ checked Sep 10, 2026	1-10	19 contacts →
	Partial evidence “Razilio is a Sydney, Australia-based boutique cybersecurity consultancy that simplifies the management of cyber risk for businesses of all sizes.” Source: RevenueBase Database · checked Sep 10, 2026
8	NCC Group Apac	Indirect evidence	Sydney, AustraliaHQ checked Sep 10, 2026	1,001-5,000	18 contacts →
	Indirect evidence “NCC Group exists to make the world safer and more secure.” Source: RevenueBase Database · checked Sep 10, 2026
9	Skylight Cyber Security	Indirect evidence	Sydney, AustraliaHQ checked Sep 10, 2026	11-50	15 contacts →
	Indirect evidence “Skylight is a boutique cyber security practice providing high-end services to the modern enterprise.” Source: RevenueBase Database · checked Sep 10, 2026
10	Cybersuite	Indirect evidence	Sydney, AustraliaHQ checked Sep 10, 2026	1-10	15 contacts →
	Indirect evidence “cyberSuite is your partner in cyber.” Source: RevenueBase Database · checked Sep 10, 2026
11	IFW Global	Indirect evidence	Sydney, AustraliaHQ checked Sep 10, 2026	11-50	14 contacts →
	Indirect evidence “IFW Global is an international private intelligence firm, specialising in cybercrime investigations, asset recovery and financial crime intelligence.” Source: RevenueBase Database · checked Sep 10, 2026
12	Parabellum	Indirect evidence	Sydney, AustraliaHQ checked Sep 10, 2026	11-50	13 contacts →
	Indirect evidence “At Parabellum, we help organisations see clearly and act confidently in a complex digital world.” Source: RevenueBase Database · checked Sep 10, 2026
13	Cyberhub Group	Indirect evidence	Sydney, AustraliaHQ checked Sep 10, 2026	11-50	9 contacts →
	Indirect evidence “CyberHub was established with the aim of making Cyber Security more available to companies of all sizes.” Source: RevenueBase Database · checked Sep 10, 2026
14	Iqbox PTY LTD	Indirect evidence	Sydney, AustraliaHQ checked Sep 10, 2026	11-50	7 contacts →
	Indirect evidence “IQBOX helps you pinpoint your organization’s most pressing vulnerabilities, eliminate critical threats, and implement a security program that leaves you free to focus on…” Source: RevenueBase Database · checked Sep 10, 2026
15	Cyberpulse	Partial evidence	Sydney, AustraliaHQ checked Sep 10, 2026	11-50	6 contacts →
	Partial evidence “CyberPulse partners with organisations to operationalise security across the full threat lifecycle, from governance and compliance through to detection, response, and continuous…” Source: RevenueBase Database · checked Sep 10, 2026
16	DVULN	Partial evidence	Sydney, AustraliaHQ checked Sep 10, 2026	1-10	6 contacts →
	Partial 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 10, 2026
17	Cyberlinx	Indirect evidence	Sydney, AustraliaHQ checked Sep 10, 2026	1-10	6 contacts →
	Indirect evidence “Cyberlinx is a premier cyber security solutions and services provider, we offer a comprehensive range of cyber security solutions, including, infrastructure and network security…” Source: RevenueBase Database · checked Sep 10, 2026
18	Fort1 PTY LTD	Partial evidence	Sydney, AustraliaHQ checked Sep 10, 2026	1-10	5 contacts →
	Partial evidence “Fort1: Comprehensive Cybersecurity Services based in Australia.” Source: RevenueBase Database · checked Sep 10, 2026
19	D2unet PTY LTD	Partial evidence	Sydney, AustraliaHQ checked Sep 10, 2026	1-10	5 contacts →
	Partial evidence “At D2UNet, we take a multi-faceted approach to cybersecurity.” Source: RevenueBase Database · checked Sep 10, 2026
20	Nsaa Security	Indirect evidence	Sydney, AustraliaHQ checked Sep 10, 2026	1-10	5 contacts →
	Indirect evidence “Who are NSAA Security NSAA Security team have years of experience working within highly demanding information security environments.” Source: RevenueBase Database · checked Sep 10, 2026
21	Centropy Services & Solutions	Indirect evidence	Sydney, AustraliaHQ checked Sep 10, 2026	1-10	4 contacts →
	Indirect evidence “The term Centropy is a scientific reference to the reversal of chaos or entropy.” Source: RevenueBase Database · checked Sep 10, 2026
22	Cybercuity	Indirect evidence	Sydney, AustraliaHQ checked Sep 10, 2026	1-10	4 contacts →
	Indirect evidence “Cybercuity is an independent boutique cyber security delivery provider with a proven track record of delivering transformational cyber outcomes for clients that reduce their cyber…” Source: RevenueBase Database · checked Sep 10, 2026
23	Sense Of Security	Indirect evidence	Sydney, AustraliaHQ checked Sep 10, 2026	11-50	3 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 10, 2026
24	Outsourcedciso	Partial evidence	Sydney, AustraliaHQ checked Sep 10, 2026	1-10	3 contacts →
	Partial evidence “We give businesses the cybersecurity guidance they need in a flexible, cost-effective way.” Source: RevenueBase Database · checked Sep 10, 2026
25	Walking Comet	Indirect evidence	Sydney, AustraliaHQ checked Sep 10, 2026	1-10	2 contacts →
	Indirect evidence “Imagine knowing your business, staff, and customers could be under threat.” Source: RevenueBase Database · checked Sep 10, 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 incident response 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 incident response firms.
Partial evidence: Its own public description names part of cybersecurity incident response firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cybersecurity incident response 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 79 cybersecurity incident response firms based in Sydney, Australia

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Cybersecurity incident response firms based in Sydney, Australia at a glance

As of Sep 10, 2026

37.3%Verified-email coverage

5.0%Mobile-number coverage

6.8Average contacts per company

1-10Median size (employees)

103.8%Largest-city concentration · Sydney

Sep 10, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 12.0d

1880–30

1431–60

061–90

090–180

0180+

Company record updated

Median 59.0d

00–30

28331–60

18161–90

3590–180

42180+

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 incident response 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 Sydney, Australia whose own description of what they do matches “cybersecurity incident response 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 incident response 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 incident response firms, and records with no verified work email. Companies headquartered outside Sydney 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, 202 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 10, 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 incident response firms by metro in Australia

Cybersecurity incident response firms in Sydney82
Cybersecurity incident response firms in Melbourne82
Cybersecurity incident response firms in Brisbane33

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 incident response 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 incident response firms are there based in Sydney, Australia?

RevenueBase identified 79 cybersecurity incident response firms headquartered in Sydney, 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?

Northbridge Systems, headquartered in Sydney, tops this list with the largest team on record.

Which city has the most cybersecurity incident response firms?

Sydney leads with 82 headquartered companies, followed by Melbourne (82) and Brisbane (33).

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 202 verified decision-maker contacts tracked across these 79 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 10, 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.