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Respond to cyber threats and take steps to protect yourself from further harm.
Resources for business and government agencies on cyber security.
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Implementing SIEM and SOAR platforms Guidance
May 27, 2025 - SIEM and SOAR platforms can greatly benefit your organisation by collecting, centralising, and analysing important data, detecting cyber security events and incidents and prompting timely intervention.
Online shopping Guidance
Nov 7, 2023 - Be secure when shopping online.
Critical security vulnerability affecting Apache Struts2 below 6.4.0. Alert
Dec 13, 2024 - ASD’s ACSC is aware of a critical vulnerability impacting Apache Struts2 below 6.4.0 (CVE-2024-53677).
Guidelines for networking Advice
Dec 4, 2025 - This chapter of the Information security manual (ISM) provides guidance on networking.
ASD's ACSC/NCSC collaboration to strengthen cyber security posture News
Nov 4, 2022 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) and the UK’s National Cyber Security Centre (NCSC) are committed to improving our respective nation’s cyber security posture and protecting our networks from cyber threats.
SonicWall Breach Alert
Feb 4, 2021 - SonicWall identified an internal systems breach using a zero-day vulnerability within the SMA 100 series 10.x code.
Cisco IOS XE Software Web UI Zero Day Vulnerability Alert
Oct 25, 2023 - A previously unknown vulnerability (CVE-2023-20198) in the web UI feature of Cisco IOS XE Software could allow a malicious actor to take control of vulnerable devices. All Australian organisations should follow the recommendations published by Cisco.
Recovering compromised bank accounts and online payment accounts Guidance
Nov 10, 2023 - Bank accounts are among the most important accounts to us and the most prized accounts to cybercriminals.
Guidelines for evaluated products Advice
Dec 4, 2025 - This chapter of the Information security manual (ISM) provides guidance on evaluated products.
Implementing application control Publication
Nov 27, 2023 - Application control is one of the most effective mitigation strategies in ensuring the security of systems. As such, application control forms part of the Essential Eight from the Strategies to mitigate cybersecurity incidents. This publication provides guidance on what application control is, what application control is not, and how to implement application control.
Critical Vulnerability in popular Java framework Apache Struts2 Alert
Dec 14, 2023 - The Australian Signals Directorate’s Australian Cyber Security Centre (ACSC) is concerned about a critical Remote Code Execution (RCE) vulnerability in Apache Struts2. This primarily affects Java applications which use this framework. Apache Struts2 is widely used in enterprise and bespoke Java applications.
Recovering a compromised online account Guidance
Nov 10, 2023 - Online accounts are important for our day-to-day activities and often store sensitive information about us. This can make them useful for cybercriminals looking to gain access to our resources or identities.
Recovering a compromised email account Guidance
Nov 10, 2023 - Email accounts are valuable targets for cybercriminals. Not just because they store sensitive messages, but also because they can be used to impersonate the account owner, to spread scams, and to perform password resets.
Priority logs for SIEM ingestion: Practitioner guidance Publication
May 27, 2025 - This document is again intended for cyber security practitioners and provides detailed, technical guidance on the logs that should be prioritised for SIEM ingestion. It covers log sources including Endpoint Detection and Response tools, Windows/Linux operating systems, and Cloud and Network Devices.
Vulnerability Affecting BlackBerry QNX RTOS Alert
Aug 18, 2021 - BlackBerry has disclosed that its QNX Real Time Operating System is affected by a BadAlloc vulnerability - CVE-2021-22156. QNX is the world’s most prevalent real time operating system.
Cyber supply chain risk management Publication
May 22, 2023 - All organisations should consider cyber supply chain risk management. If a supplier, manufacturer, distributor or retailer (i.e. businesses that constitute a cyber supply chain) are involved in products or services used by an organisation, there will be a cyber supply chain risk originating from those businesses. Likewise, an organisation will transfer any cyber supply chain risk they hold to their customers.
Guidelines for secure AI system development Publication
Nov 27, 2023 - This document recommends guidelines for providers of any systems that use artificial intelligence (AI), whether those systems have been created from scratch or built on top of tools and services provided by others. This document is aimed primarily at providers of AI systems who are using models hosted by an organisation, or are using external application programming interfaces (APIs).
Guidelines for physical security Advice
Dec 4, 2025 - This chapter of the Information security manual (ISM) provides guidance on physical security.
Cloud assessment and authorisation Publication
Jan 18, 2024 - This publication is co-designed with industry to support the secure adoption of cloud services across government and industry.
OS Command Injection Vulnerability in GlobalProtect Gateway Alert
May 3, 2024 - ASD’s ACSC is aware of a vulnerability (CVE-2024-3400) that enables an unauthenticated attacker to execute arbitrary code with root privileges on the firewall.
