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Interactive tools and advice to boost your online safety.
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Common online security risks and advice on what you can do to protect yourself.
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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Detecting socially engineered messages Publication
Oct 6, 2021 - Socially engineered messages pose a significant threat to organisations. They can have a big impact, helping malicious actors access accounts, systems or sensitive information. Learn how to spot a socially engineered message, including through email, SMS, social media or messaging apps.
2021-003: Ongoing campaign using Avaddon Ransomware Advisory
May 8, 2021 - The Australian Cyber Security Centre (ACSC) is aware of an ongoing ransomware campaign utilising the Avaddon Ransomware malware. This campaign is actively targeting Australian organisations in a variety of sectors. This advisory provides details of Avaddon threat actors, dark web activity, targeted countries and sectors, the malware infection chain, and known Techniques, Tools, and Procedures (TTPs). If activity is identified relating to this advisory please report any findings to the ACSC.
Cyber security incident response planning: Executive guidance Publication
Dec 12, 2024 - The Australian Signals Directorate (ASD) is responsible for monitoring and responding to cyber threats targeting Australian interests. Reporting cyber security incidents to ASD ensures that timely assistance can be provided, if required. This may be in the form of investigations or remediation advice.
Technical example: User application hardening Publication
Dec 16, 2022 - User application hardening protects an organisation from a range of threats including malicious websites, advertisements running malicious scripts and exploitation of vulnerabilities in unsupported software. These attacks often take legitimate application functionality and use it for malicious purposes. User application hardening makes it harder for cybercriminals to exploit vulnerabilities or at-risk functionality in your organisation’s applications.
Cyber security incident response planning: Practitioner guidance Publication
Dec 12, 2024 - ASD defines a cyber security incident as an unwanted or unexpected cyber security event, or a series of such events, that has either compromised business operations or has a significant probability of compromising business operations.
Risk management of enterprise mobility (including Bring Your Own Device) Publication
Oct 6, 2021 - This publication has been developed to provide senior business representatives with a list of enterprise mobility considerations. These include business cases, regulatory obligations and legislation, available budget and personnel resources, and risk tolerance. Additionally, risk management controls are provided for cybersecurity practitioners.
Resources library
Jun 18, 2025 - Resources for individuals, families and small businesses
The Commonwealth Cyber Security Posture in 2025 Reports and statistics
Feb 12, 2026 - The Commonwealth Cyber Security Posture in 2025 informs the Australian Parliament on cyber security measures implemented across the Australian Government for the 2024–25 financial year.
Update your devices to keep cybercriminals out News
May 3, 2021 - Updating the software on electronic devices is one of the easiest and most important ways all Australians can defend against cybercriminals and be protected from online threats.
Progress ongoing to improve the Australian Government’s cyber resilience News
Feb 12, 2026 - The 2025 Commonwealth Cyber Security Posture Report highlights ongoing progress in implementing the Australian Signals Directorate’s Essential Eight mitigation strategies.
Protecting your family Guidance
May 2, 2023 - Advice and guidance for parents and guardians to help children have secure experiences online.
Report and recover from account compromise Guidance
Nov 10, 2023 - A guide to recovering your account and protecting you against future attacks.
Alerts and advisories
Jan 30, 2023 - Find the latest in cyber security alerts and advisories
Secure connectivity principles for Operational Technology (OT) Publication
Jan 15, 2026 - How organisations should design, secure, and manage connectivity in operational technology (OT).
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.
Pro-Russia Hacktivists Conduct Opportunistic Attacks Against US and Global Critical Infrastructure Advisory
Dec 10, 2025 - This joint Cybersecurity Advisory outlines the tactics, techniques and procedures used by pro-Russia hacktivist groups conducting unsophisticated attacks against US and global critical infrastructure, as well as recommended mitigations.
Guidelines for cyber security incidents Advice
Dec 4, 2025 - This chapter of the Information security manual (ISM) provides guidance on cyber security incidents.
Report
Apr 11, 2023 - Report a cybercrime, incident or vulnerability.
New OT connectivity principles set a higher security bar for organisations News
Jan 15, 2026 - Our latest guidance outlines 8 principles to secure operational technology connectivity, helping organisations reduce exposure, harden boundaries, and strengthen resilience across industrial environments.
Supporting Australian organisations through a cyber security incident Guidance
Oct 23, 2025 - Malicious cyber activity continues to pose a significant risk to Australia’s security and prosperity. Australian organisations that have been, or may be impacted by a cyber security incident, are encouraged to reach out to the Australian Signal’s Directorate (ASD) to seek technical incident response advice and assistance.
