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Interactive tools and advice to boost your online safety.
Advice and information about how to protect yourself online.
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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System hardening
Oct 31, 2025 - This page lists publications on the hardening of applications and IT equipment.
Fast Flux: A national security threat Advisory
Apr 4, 2025 - This advisory is for network defenders and explains how Bulletproof Hosting Providers are using ‘fast flux’ to cycle quickly through bots and DNS records to bypass detection. It highlights the importance of using a reputable Protective DNS (PDNS) provider that detects and blocks fast flux.
Email hardening
Oct 31, 2025 - This page lists publications on the hardening of message exchange via electronic mail.
Resources library
Jun 18, 2025 - Resources for individuals, families and small businesses
Protect yourself from scams
Feb 3, 2025 - Protect your accounts by recognising and reporting scams.
Quantum
Dec 15, 2025 - This page lists publications to help your organisation factor specific quantum technologies into its cyber security plans.
Infosec Registered Assessors Program (IRAP) Program
Nov 17, 2025 - The Infosec Registered Assessors Program (IRAP) ensures entities can access high-quality security assessment services.
Assessment and evaluation programs
Sep 3, 2025 - ASD's ACSC's programs and resources to support the assessment and evaluation of information security and critical infrastructure.
Be Ready - auDA Domain Name Changes News
Mar 23, 2022 - The new domain name category could leave your business or organisation open to fraudulent cyber activity, such as business email compromise.
Barracuda Email Security Gateway (ESG) malicious activity – additional Indicators of Compromise released Alert
Dec 25, 2023 - Update: ASD's ACSC is aware of active exploitation of a third party library, Spreadsheet::ParseExcel, leading to potential Arbitrary Code Execution in Barracuda ESG appliances (CVE-2023-7101 and CVE-2023-7102).
Iranian Government-Sponsored APT Cyber Actors Exploiting Microsoft Exchange and Fortinet Vulnerabilities in Furtherance of Malicious Activities Advisory
Nov 22, 2021 - Iranian government-sponsored APT actors are actively targeting a broad range of victims across multiple U.S. critical infrastructure sectors, including the Transportation Sector and the Healthcare and Public Health Sector, as well as Australian organisations.
Exploitation of vulnerabilities affecting Cisco firewall platforms Alert
Apr 25, 2024 - This alert has been written for the IT teams of organisations and government. Entities are strongly encouraged to take immediate action to ensure affected devices are patched and investigate for potential compromise.
Exploitation of Unitronics Programmable Logic Controllers (PLCs) Alert
Dec 5, 2023 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD's ACSC) is concerned about global exploitation of Programmable Logic Controllers (PLC) and is aware of reports of compromise of these devices in Australia. These devices are present in a number of critical sectors such as water, energy, fuel and healthcare.
Critical infrastructure
Jul 22, 2024 - Technical advice and non-regulatory guidance for critical infrastructure.
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.
Mobility hardening
Sep 3, 2025 - This page lists advice and resources to help keep mobile devices and mobility tools secure.
How to secure your devices
Nov 29, 2024 - Protect your sensitive data and accounts. Learn how to secure your devices such as your computer, mobile phone and Internet of Things devices.
Microsoft's investment in Australia’s cyber security News
Oct 24, 2023 - The Prime Minister has announced Microsoft’s $5 billion commitment to building Australia’s cyber defence.
Cloud computing
Jan 18, 2024 - This page lists publications on securing the use of cloud computing services.
Network hardening
Apr 11, 2023 - This page lists publications on the hardening of network infrastructure.
