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Use of Log4j vulnerabilities in ransomware activity Alert
Dec 23, 2021 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) expects an increase in ransomware activity using Log4j as an exploit vector. Malicious actors may take advantage of trivial exploits to impact Australian organisations.
Traffic Light Protocol (TLP) Publication
The Traffic Light Protocol is a set of Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) designations used to ensure that information is shared with the correct audience.
Essential Eight maturity model Publication
Nov 27, 2023 - This publication provides advice on how to implement the Essential Eight.
Translated information
Apr 4, 2024 - We have developed easy-to-follow cyber security information and resources to support people from non-English speaking backgrounds to be more cyber secure.
Password managers Guidance
May 12, 2025 - Learn how to create and store passwords in a secure location for your important accounts.
Network hardening
Apr 11, 2023 - This page lists publications on the hardening of network infrastructure.
Bring Your Own Device for executives Publication
Oct 6, 2021 - Bring Your Own Device (BYOD) scenarios enable organisations to take advantage of new technologies faster. It also has the potential to reduce hardware costs and improve organisational productivity and flexibility. However, BYOD also introduces new risks to an organisation’s business and the security of its information, which need to be carefully considered before implementation.
Managing the risks of legacy IT: Executive guidance Publication
Jun 12, 2024 - This publication provides high-level and strategic guidance for an organisation’s executive seeking to manage the risks of legacy IT.
An introduction to artificial intelligence Publication
Nov 24, 2023 - Artificial intelligence (AI) is an emerging technology that will play an increasingly influential role in the everyday life of Australians.
JCSC virtual presentations on Log4j2 vulnerability – Friday 17 December News
Dec 16, 2021 - A critical alert and advisory has been published on the Log4j2 vulnerability. On Friday 17 December 2021, ASD's ACSC’s Joint Cyber Security Centres (JCSCs) will facilitate a series of virtual awareness and advice sessions about this vulnerability. Australians are urged to act now to secure their computer systems against this critical software vulnerability.
Hardening Linux workstations and servers Publication
Nov 27, 2023 - This publication has been developed to assist organisations in understanding how to harden Linux workstations and servers.
Critical vulnerability discovered in HTTP.SYS in Microsoft Windows Alert
May 13, 2021 - A remote code execution vulnerability could enable a malicious cyber actor to compromise vulnerable Microsoft Windows hosts. The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) strongly recommends applying available patches.
Multiple high severity vulnerabilities discovered in the Exim mail server Alert
May 10, 2021 - Exim vulnerabilities could enable a malicious cyber actor to compromise vulnerable Exim servers. The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) strongly recommends applying available patches.
Identifying cyber supply chain risks Publication
May 22, 2023 - This guidance has been developed to assist organisations in identifying risks associated with their use of suppliers, manufacturers, distributors and retailers (i.e. businesses that constitute their cyber supply chain).
Web conferencing security Publication
Oct 6, 2021 - Web conferencing tools are essential for meeting with colleagues and clients online. This guide provides tips on how to choose a secure web conference provider, and what risks to be aware of.
Guidelines for cryptography Advice
Dec 4, 2025 - This chapter of the Information security manual (ISM) provides guidance on cryptography.
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.
Joint advisory on top cyber vulnerabilities News
Jul 28, 2021 - The top 30 cyber security vulnerabilities exploited by malicious cyber actors since 2020 have been detailed in a joint advisory issued by the Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) and counterpart cyber security agencies from the United States and the United Kingdom.
Implementing multi-factor authentication Publication
Nov 27, 2023 - This publication has been developed to provide guidance on what multi-factor authentication is, different multi-factor authentication methods that exist and why some multi-factor authentication methods are more secure, and therefore more effective, than others.
ISM OSCAL v2025.12.9
Dec 9, 2025 - ISM OSCAL v2024.10.8 - based on December 2025 Information Security Manual (ISM) and OSCAL version 1.1.2.