Company lists · Data refreshed September 2026

Top 25 Cybersecurity incident response firms based in Australia

Name: Cybersecurity incident response 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 376 companies tracked

RevenueBase identified 376 company matches for cybersecurity incident response firms associated with Australia as of September 2026 and tracks 4,761 professional contacts across them, including 1,981 with verified work emails and 244 with mobile numbers. Sydney is the largest hub.

This list covers company matches for cybersecurity incident response firms associated with Australia, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 1, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 SmartSearch · Exact Recorded Sep 1, 2026 How this list was built

376Companies

4,761Contacts tracked

1,981Verified emails

244Mobile numbers

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The 25 largest cybersecurity incident response firms based in Australia

Ranked by team size

Top 25 of 376 company matches for cybersecurity incident response firms based in Australia, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 1, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	PT Itsec Asia TBK	Exact match	Melbourne, Australia	201-500	387 contacts →
	Exact match “ITSEC Asia is a leading cybersecurity company in Indonesia, listed on the Indonesian Stock Exchange (“CYBR”), with over 400 employees across five countries.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
2	Triskele Labs	Exact match	Melbourne, Australia	51-200	123 contacts →
	Exact match “Triskele Labs is one of Australia’s fastest growing cybersecurity companies.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
3	Optic Security Group	Exact match	Broome, Australia	201-500	122 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
4	RED Sift	Exact match	Surry Hills, Australia	51-200	109 contacts →
	Exact match “Red Sift enables organizations to anticipate, respond to, and recover from cyber attacks while continuing to operate effectively.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
5	Secutec	Exact match	Sydney, Australia	51-200	102 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
6	Sekuro	Exact match	Australia	51-200	100 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
7	Northbridge Systems	Exact match	St Leonards, Australia	51-200	70 contacts →
	Exact match “Northbridge is an Australian-owned cybersecurity services provider with more than 25 years’ experience delivering engineered, integrated and fully managed security services to…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
8	Entersoft Security	Exact match	Brisbane, Australia	51-200	63 contacts →
	Exact match “Entersoft Security is an AI-enabled cybersecurity services firm helping modern enterprises build, ship, and operate secure digital products at scale.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
9	E2e-Assure	Exact match	Canberra, Australia	51-200	60 contacts →
	Exact match “e2e-assure is the UK's leading specialist in Managed Threat Detection and Response through our 24/7/365 UK owned and operated Security Operations Centre (SOC).” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
10	RED Piranha	Exact match	Melbourne, Australia	51-200	58 contacts →
	Exact match “Australia’s leading developer and manufacturer of advanced cybersecurity technology, Red Piranha delivers next-generation cyber defence solutions designed to protect modern…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
11	Ipsec PTY LTD	Exact match	Cremorne, Australia	11-50	57 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
12	Emerging IT	Exact match	Mulgrave, Australia	51-200	45 contacts →
	Exact match “Clarity in a complex world.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
13	Slipstream Cyber	Exact match	St Leonards, Australia	11-50	42 contacts →
	Exact match “Slipstream Cyber is a business of Interactive - Australia's leading technology solutions provider.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
14	Vectra	Exact match	Melbourne, Australia	51-200	42 contacts →
	Exact match “Vectra, an Ensign company, is Australia’s trusted partner for security consulting, risk management, compliance, and managed services.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
15	Ionize	Exact match	Canberra, Australia	51-200	34 contacts →
	Exact match “When it comes to security there's no shortage of companies ready to tell you about your vulnerabilities.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
16	OP Innovate	Exact match	Canberra, Australia	11-50	34 contacts →
	Exact match “Established in 2014 to defend global enterprises from the increasing challenges of organizational cybersecurity.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
17	Cybernara	Exact match	Adelaide, Australia	11-50	29 contacts →
	Exact match “We are more than just a cybersecurity company; we are your partners in securing your digital future.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
18	Silentgrid Security	Exact match	Sydney, Australia	11-50	22 contacts →
	Exact match “SilentGrid is an offensive security consultancy with a focus on adversary simulation and penetration testing.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
19	GCIT	Exact match	Burleigh Heads, Australia	11-50	19 contacts →
	Exact match “Based on the Gold Coast, GCIT provides IT security and managed services across Australia.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
20	NCC Group Apac	Exact match	Sydney, Australia	1,001-5,000	18 contacts →
	Exact match “NCC Group exists to make the world safer and more secure.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
21	Retrospect Labs	Exact match	Melbourne, Australia	11-50	17 contacts →
	Exact match “Retrospect Labs is a specialist information security company focused on helping companies improve their security posture and resilience through realistic exercises.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
22	Sinevis	Exact match	Australia	11-50	17 contacts →
	Exact match “We are a leading cybersecurity services organization with more than a decade of proven expertise in consulting, solution implementation and managed services.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
23	Cube Cyber	Exact match	Perth, Australia	11-50	16 contacts →
	Exact match “Cube Cyber is an Australian cybersecurity company specialising in Managed Detection & Response (MDR), Security Operations, and Cybersecurity & AI Governance advisory.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
24	Secure ISS	Exact match	Southport, Australia	11-50	16 contacts →
	Exact match “Aussie-built, AI-powered security operations with local expertise, advanced threat detection, and round-the-clock protection.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
25	VIDEN	Exact match	Braddon, Australia	51-200	16 contacts →
	Exact match “Viden is a leading Australian cyber security consultancy and cyber physical systems and digital forensics testing laboratory.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “cybersecurity incident response firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 376 cybersecurity incident response firms based in Australia

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Cybersecurity incident response firms based in Australia at a glance

As of Sep 1, 2026

41.6%Verified-email coverage

5.1%Mobile-number coverage

12.7Average contacts per company

1-10Median size (employees)

21.8%Largest-city concentration · Sydney

Sep 1, 2026Page data refreshed

Companies by employee count

1-10

223

11-50

117

51-200

201-500

1,001-5,000

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Australia whose business descriptions match “cybersecurity incident response firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 1,981 professional contacts with verified work emails across the full matched dataset. 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.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Cybersecurity incident response firms by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “cybersecurity incident response firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many cybersecurity incident response firms are there based in Australia?

RevenueBase identified 376 company matches for cybersecurity incident response firms associated with Australia as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

PT Itsec Asia TBK tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most cybersecurity incident response firms?

Sydney leads with 82 company records, 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 limited free results with 500 credits to start. Upgrading provides access to the 1,981 professional contacts with verified work emails tracked across these 376 companies; direct dials are available where recorded.

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 SmartSearch, 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.