Company lists · Data refreshed September 2026

Top 22 Industrial control system security based in Australia

RevenueBase identified 78 industrial control system security headquartered in Australia as of September 2026 and tracks 1,447 professional contacts across them, including 416 with verified work emails and 53 with mobile numbers. Sydney is the largest hub.

This list covers industrial control system security 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, how directly it supports the match, and when it was last checked. Data refreshed September 3, 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 HQ checked on every row Match evidence on every row Refreshed Sep 3, 2026 86% judged on-target in blind review
78Companies
1,447Contacts tracked
416Verified emails
53Mobile numbers
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The 22 largest industrial control system security based in Australia

Ranked by team size
Top 22 of 78 industrial control system security based in Australia, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names industrial control system security: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
CSEPartial evidence
West Perth, AustraliaHQ checked Sep 3, 202651-20095

“At CSE, we’re building a safer, more productive world through the integration of intelligent systems.”

Source: company website · checked Sep 3, 2026
2
Atsys PTY LTDStrong evidence
Unley, AustraliaHQ checked Sep 3, 202651-20088

“ATSYS is a leading Digital Systems, Process Control Systems, and Cyber Security services company.”

Source: company website · checked Sep 3, 2026
3
RED PiranhaIndirect evidence
Perth, AustraliaHQ checked Sep 3, 202651-20058

“Australia’s leading developer and manufacturer of advanced cybersecurity technology, Red Piranha delivers next-generation cyber defence solutions designed to protect modern…”

Source: company website · checked Sep 3, 2026
4
IonizePartial evidence
Canberra, AustraliaHQ checked Sep 3, 202651-20034

“When it comes to security there's no shortage of companies ready to tell you about your vulnerabilities.”

Source: company website · checked Sep 3, 2026
5
CyberxcelIndirect evidence
Brisbane, AustraliaHQ checked Sep 3, 2026n/a33

“Founded by Sohail Ershadi, a distinguished cybersecurity expert with over a decade of experience in the IT industry, CyberXcel has rapidly emerged as a leader in cybersecurity…”

Source: company website · checked Sep 3, 2026
6
CybernaraPartial evidence
Adelaide, AustraliaHQ checked Sep 3, 202611-5029

“We are more than just a cybersecurity company; we are your partners in securing your digital future.”

Source: company website · checked Sep 3, 2026
7
Surecity NetworksIndirect evidence
South Melbourne, AustraliaHQ checked Sep 3, 202611-5019

“SureCity Networks is an Australian Cybersecurity firm with offices in Melbourne, Sydney, Brisbane and the UK, trusted by enterprises globally.”

Source: company website · checked Sep 3, 2026
8South Yarra, AustraliaHQ checked Sep 3, 202611-5018

“Born in Australia.”

Source: company website · checked Sep 3, 2026
9
Zynet PTY LTDStrong evidence
Tullamarine, AustraliaHQ checked Sep 3, 202611-5017

“Zynet is an Australian cyber security and IT services provider with more than 25 years of experience protecting organisations and keeping critical systems running.”

Source: company website · checked Sep 3, 2026
10
Spartans SecurityIndirect evidence
Cremorne, AustraliaHQ checked Sep 3, 202611-5014

“Facing the Complexities of Cybersecurity?”

Source: company website · checked Sep 3, 2026
11
CosivePartial evidence
Melbourne, AustraliaHQ checked Sep 3, 202611-5014

“We help organisations get better at Security Operations and Cyber Threat Intelligence with specialised consulting, engineering, and managed security platforms.”

Source: company website · checked Sep 3, 2026
12
Forensic ITStrong evidence
Melbourne, AustraliaHQ checked Sep 3, 202611-5012

“Forensic IT is a specialised cyber security firm with expertise in Digital Forensics and Incident Response (DFIR), and securing Industrial Control Systems (CIS).”

Source: company website · checked Sep 3, 2026
13
ClearedPartial evidence
Canberra, AustraliaHQ checked Sep 3, 202611-5011

Security simplified.”

Source: company website · checked Sep 3, 2026
14
Cognitio DigitalIndirect evidence
Brisbane, AustraliaHQ checked Sep 3, 202611-5011

“At Cognitio Digital we don’t try to do it all, or be everything to everybody.”

Source: company website · checked Sep 3, 2026
15
Cyber Audit TeamPartial evidence
South East Queensland, AustraliaHQ checked Sep 3, 202611-5010

“Cyber Audit Team is a leading multi-disciplinary Australian cyber security company offering holistic 'end-to-end' solutions, ensuring that our clients' businesses are operating in…”

Source: company website · checked Sep 3, 2026
16
SteltekIndirect evidence
Perth, AustraliaHQ checked Sep 3, 20261-1010

“In a world where cyber threats are becoming increasingly sophisticated, partnering with Steltek means staying one step ahead.”

Source: company website · checked Sep 3, 2026
17
Riot SolutionsPartial evidence
Brisbane, AustraliaHQ checked Sep 3, 202651-2007

“RIOT is a local, national provider of managed cyber security services across both IT and OT environments that differentiates itself by offering customers access to experts in the…”

Source: company website · checked Sep 3, 2026
18
Iqbox PTY LTDPartial evidence
Sydney, AustraliaHQ checked Sep 3, 202611-507

“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: company website · checked Sep 3, 2026
19
DatablIndirect evidence
Perth, AustraliaHQ checked Sep 3, 202611-506

“Our mission is to provide simple solutions to complex cybersecurity problems, ensuring businesses of all sizes can navigate the intricate world of cyber threats with confidence.”

Source: company website · checked Sep 3, 2026
20
Fort1 PTY LTDIndirect evidence
Sydney, AustraliaHQ checked Sep 3, 20261-105

“Fort1: Comprehensive Cybersecurity Services based in Australia.”

Source: company website · checked Sep 3, 2026
21
AGIXIndirect evidence
Parkside, AustraliaHQ checked Sep 3, 202611-504

“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: company website · checked Sep 3, 2026
22
Sapien CyberIndirect evidence
Joondalup, AustraliaHQ checked Sep 3, 202611-503

“Sapien Cyber is an Australian company providing class-leading cybersecurity and threat intelligence solutions for the protection of critical infrastructure.”

Source: company website · checked Sep 3, 2026

Showing 22 of 78 industrial control system security based in Australia

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Industrial control system security based in Australia at a glance

As of Sep 3, 2026
1-10Median size (employees)
SydneyLargest hub · 16 HQs
53Contacts with mobile numbers
Sep 3, 2026Data refreshed

Companies by employee count

1-10
39
11-50
27
51-200
10
201-500
2

Verified emails by last verification

0–30
0
31–60
52
61–90
254
90–180
108
180+
2

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 industrial control system security, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Australia whose own description of what they do matches “industrial control system security”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among industrial control system security, 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 an evidence 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, 416 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 3, 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

How many industrial control system security are there based in Australia?

RevenueBase identified 78 industrial control system security 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?

CSE, headquartered in West Perth, tops this list with the largest team on record.

Which city has the most industrial control system security?

Sydney leads with 16 headquartered companies, followed by Melbourne (12) and Brisbane (10).

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 416 verified decision-maker contacts tracked across these 78 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 3, 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.