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Identity theft   Threat

Nov 14, 2024 - Learn about how identity theft can affect you and how to keep your personal information secure.

COVID-19 scam messages   Advisory

Mar 16, 2020 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD's ACSC) is aware of a COVID-19 themed scam being distributed via text message.

Disclaimer  

Jan 13, 2026 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) publishes this website to distribute information to the public and government ICT security professionals. We regularly review and update the information provided.

Preparing for and responding to denial-of-service attacks   Publication

Mar 17, 2025 - Although organisations cannot avoid being targeted by denial-of-service attacks, there are a number of measures that organisations can implement to prepare for and potentially reduce the impact if targeted. Preparing for denial-of-service attacks before they occur is by far the best strategy, it is very difficult to respond once they begin and efforts at this stage are unlikely to be effective.

A fireside chat with Australia’s Big 4 Banks   News

Jan 23, 2026 - Hear from cyber leaders from Australia’s largest banks as they discuss the Annual Cyber Threat Report, and how they manage cyber threats at scale.

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.

Business Continuity in a Box   Guidance

Aug 21, 2024 - Business Continuity in a Box assists organisations to swiftly and securely stand up critical business functions during or following a cybersecurity incident that has affected the availability or trust of existing systems.

Domain Name System security for domain resolvers   Publication

Oct 6, 2021 - This publication explores DNS security for recursive resolution servers. It also shares helpful strategies to reduce the risk of DNS resolver subversion or compromise.

Gateway security guidance package: Gateway technology guides   Publication

Jul 29, 2025 - This guidance is one part of a package of documents that forms the gateway security guidance package. When designing, procuring, operating, maintaining or disposing of a gateway, it is important to consider all the documents from the gateway security guidance package at different stages of governance, design and implementation, and not to consume this guidance in isolation.

While you are shopping   Guidance

The best way to avoid being a victim of cybercrime is to be informed. It is really important to know how to secure your device and recognise a fake website or scammer.

Report a cyber security incident   Service

If you are reporting fraud or cybercrime, please refer to the ReportCyber – Cybercrime page.

Protect yourself and others from MyGov-related scams   Advisory

Jul 16, 2020 - The Australian Taxation Office (ATO) is receiving increased reports of myGov-related SMS and email scams. As always, our advice is DON’T click any links and DON’T provide the information requested.

Cryptomining   Threat

Jun 23, 2020 - Cryptocurrency mining (cryptomining) uses the processing power of computers to solve complex mathematical problems and verify cybercurrency transactions. The miners are then rewarded with a small amount of cybercurrency.

Defending against the malicious use of the Tor network   Publication

Oct 6, 2021 - The Tor network is a system that conceals a user’s IP address. It allows anonymous – and often malicious – communication. This guidance shares advice on how to detect and prevent traffic from the Tor network.

Mergers, acquisitions and Machinery of Government changes   Publication

Jun 10, 2022 - This publication provides guidance on strategies that organisations can apply during mergers, acquisitions and Machinery of Government changes.

Secure your Wi-Fi and router   Guidance

Oct 29, 2024 - How to make your software, devices and networks harder to access and more resilient to attack.

Secure your email   Guidance

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

COVID-19 Malicious Scams - Threat Awareness and Guidance   Advisory

Mar 27, 2020 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) has produced a detailed report, including practical cyber security advice that organisations and individuals can follow to reduce the risk of harm.

Social media terms of use  

Jan 13, 2026 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) uses a number of social media services as part of its communications activities. These services include Facebook, Twitter, LinkedIn, Vimeo and YouTube. 

COVID-19 themed malicious cyber activity   Advisory

Mar 27, 2020 - This update is designed to raise awareness of increasing COVID-19 themed malicious cyber activity, and provide practical cyber security advice that organisations and individuals can follow to reduce the risk of being impacted.