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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.

Russian FSB cyber actor Star Blizzard continues worldwide spear-phishing campaigns   Advisory

Dec 8, 2023 - The Russia-based actor is targeting organisations and individuals in the UK and other geographical areas of interest.

Data breaches   Threat

Aug 30, 2023 - Sometimes personal information is released to unauthorised people by accident or as the result of a security breach. For example, an email with personal information can be sent to the wrong person, or a computer system can be hacked and personal information stolen. These are known as data breaches or data spills.

Security tips for remote working   Guidance

Jul 29, 2024 - As an employee, you may be more at risk when working away from the office. Learn how to stay secure while working from home or remotely.

Report and recover from a data breach   Guidance

Jul 14, 2023 - A data breach occurs when sensitive or personal information is accessed, disclosed or exposed to unauthorised people.

How to protect yourself from malware   Guidance

Nov 10, 2023 - Malware (short for 'malicious software') is software that cybercriminals use to harm your computer system or network. Cybercriminals can use malware to gain access to your computer without you knowing, in targeted or broad-based attacks.

Optus Data Breach   Alert

Sep 30, 2022 - To help protect against fraud, Optus has notified customers to look to reputable sources such as Moneysmart and the Office of the Australian Information Commissioner.

Patching applications and operating systems   Publication

Nov 27, 2023 - Applying patches to applications and operating systems is critical to keeping systems secure. Patching forms part of the Essential Eight from the Strategies to mitigate cybersecurity incidents.

Scammers impersonating police to target victims for cryptocurrency/seed wallet theft   Alert

Nov 13, 2025 - The ASD’s ACSC is aware that criminals are using Australia’s national cybercrime reporting channel and impersonating police to try to scam Australians out of funds from their cryptocurrency or seed wallets.

BADBAZAAR and MOONSHINE: Spyware targeting Uyghur, Taiwanese and Tibetan groups and civil society actors   Advisory

Apr 9, 2025 - This advisory is jointly produced by government agencies from the UK, Australia, Canada, Germany, New Zealand, and the US and is supported by members of the NCSC’s Cyber League. Its purpose is to raise awareness about the growing threat that malicious cyber actors pose to individuals connected to topics including Taiwan, Tibet, Xinjiang Uyghur Autonomous Region, democracy movements and the Falun Gong.

Phishing   Threat

Mar 19, 2023 - Learn about phishing attacks and know what to do if you've been targeted.

Translated cyber security guides   News

Nov 3, 2023 - We have released 5 of our popular cyber security guides in more than 20 languages.

Geo-blocking in context: Realities, risks and recommendations   Publication

May 19, 2025 - This guidance is intended for decision makers and cybersecurity practitioners. It highlights what to be aware of when identifying the source of a threat and the potential implications of geo-blocking in a broader cybersecurity strategy.

Sextortion email campaign impacting Australians   Alert

Apr 16, 2020 - A large number of Australians are being impacted by an email ‘sextortion’ campaign in which the cyber scammers responsible have threatened to release personal and sensitive information to the recipients’ contacts unless the scammer is paid in cash or bitcoin.

Head of ACSC talks cyber security with Natarsha Belling in podcast special   News

Nov 29, 2021 - Ms Abigail Bradshaw, head of the Australian Cyber Security Centre (ACSC), recently sat down with journalist Natarsha Belling to discuss the common cyber threats affecting Australians today.

Cyber security terminology   Advice

Dec 4, 2025 - This chapter of the Information security manual (ISM) provides guidance on cyber security terminology.

Types of scams   Guidance

Learn about the common types of scams, how to identify them and how to recover from them.

Practical cyber security tips for business leaders   Publication

Jan 17, 2024 - Business leaders can be appealing targets for malicious actors due to the sensitive information they can access, the important people they interact with and the influence they hold. This publication includes a checklist of practical tips business leaders can implement to improve their cybersecurity. The checklist is followed by a brief explanation of each tip and why it is recommended.

Password managers   Guidance

May 12, 2025 - Learn how to create and store passwords in a secure location for your important accounts.

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.