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Foundations for OT cybersecurity: Asset inventory guidance for owners and operators   Publication

Aug 14, 2025 - This guidance outlines how OT owners and operators can create and maintain an asset inventory and OT taxonomy, to protect their most vital assets. It includes steps for defining scope and objectives for the inventory, identifying assets, collecting attributes, creating a taxonomy, managing data, and implementing asset life cycle management.

Creating and maintaining a definitive view of your operational technology architecture   Publication

Oct 28, 2025 - How organisations who deploy or operate operational technology systems should build, maintain and store their systems understanding.

Malicious email mitigation strategies   Publication

Oct 6, 2021 - Socially engineered emails containing malicious attachments and embedded links are routinely used in targeted cyber intrusions against organisations. This publication has been developed to provide mitigation strategies for the security risks posed by these malicious emails.

Network hardening  

Apr 11, 2023 - This page lists publications on the hardening of network infrastructure.

Suspected user credentials stolen from FortiNet devices leaked online   Alert

Sep 10, 2021 - A malicious cyber actor has leaked a list of suspected user credentials and IP address of the associated FortiNet SSL VPN device the credentials are used for. Organisations should review the patch status and history of internet exposed FortiNet SSL VPN devices and consider performing a password reset for affected users.

Small business cloud security guides  

Apr 2, 2024 - ASD's ACSC has released a series of guides designed to help small businesses secure their cloud environment.

Secure by Design  

Jul 22, 2024 - Secure by Design is a proactive, security-focused approach to the development of digital products and services that necessitates a strategic alignment of an organisation’s cybersecurity goals. Secure by Design requires cyberthreats to be considered from the outset to enable mitigations through thoughtful design, architecture and security measures. Its core value is to protect consumer privacy and data through designing, building, and delivering products with fewer vulnerabilities.

Protecting against business email compromise   Publication

Oct 6, 2021 - Business email compromise is when malicious actors use email to abuse trust in business processes to scam organisations out of money or goods. Malicious actors can impersonate business representatives using similar names, domains or fraudulent logos as a legitimate organisation or by using compromised email accounts and pretending to be a trusted co-worker.

Russian Military Cyber Actors Target U.S. and Global Critical Infrastructure   Advisory

Sep 6, 2024 - The Federal Bureau of Investigation (FBI), Cybersecurity and Infrastructure Security Agency (CISA), and National Security Agency (NSA) assess that cyber actors affiliated with the Russian General Staff Main Intelligence Directorate (GRU) 161st Specialist Training Center (Unit 29155) are responsible for computer network operations against global targets for the purposes of espionage, sabotage, and reputational harm since at least 2020.

Secure your email   Guidance

Jul 29, 2024 - How to protect yourself when using email and reduce spam and malicious emails.

Information stealer malware   Guidance

Jul 15, 2025 - Information stealer malware is a type of malware designed to steal sensitive data from devices. This can include user credentials, browser data and more.

Essential Eight explained   Publication

Nov 27, 2023 - This publication provides an overview of the Essential Eight.

Ransomware Playbook   Guidance

Oct 10, 2024 - This interactive guide is here to assist you with taking all of the appropriate steps to prepare for, respond to and recover from a ransomware incident.

Cyber Security for Operational Technology   News

Oct 2, 2024 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD's ACSC) has released new guidance to help critical infrastructure protect their systems and online supply chains.

Hunting Russian Intelligence “Snake” Malware   Advisory

May 10, 2023 - This Cybersecurity Advisory (CSA) provides background on Snake’s attribution to the FSB and detailed technical descriptions of the implant’s host architecture and network communications.

Patching applications and operating systems   Publication

Nov 27, 2023 - Applying patches to applications and operating systems is critical to keeping systems secure. Patching forms part of the Essential Eight from the Strategies to mitigate cybersecurity incidents.

Cyber security for business leaders  

May 16, 2024 - This page lists publications on governance strategies that can be applied to improve cybersecurity within organisations.

Exercise in a Box  

Nov 17, 2022 - This service provides an all-in-one platform that organisations can use to assess and improve their cybersecurity practices, in a controlled environment, and as many times as they want.

Malicious insiders   Threat

Jun 23, 2020 - Malicious insiders can be employees, former employees, contractors or business associates who have legitimate access to your systems and data, but use that access to destroy data, steal data or sabotage your systems. It does not include well-meaning staff who accidentally put your cyber security at risk or spill data.

U.S., U.K., and Australia Issue Joint Cybersecurity Advisory   News

Jul 28, 2021 - Cyber Agencies Share Top Routinely Exploited Vulnerabilities