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Important Vulnerabilities in Microsoft’s October 2023 Security Update   Alert

Oct 13, 2023 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD's ACSC) is concerned about vulnerabilities disclosed in Microsoft’s October 2023 Security Update. Government, businesses and individuals should patch their Microsoft products and apply any recommended mitigations as soon as possible.

Hunting Russian Intelligence “Snake” Malware   Advisory

May 10, 2023 - This Cybersecurity Advisory (CSA) provides background on Snake’s attribution to the FSB and detailed technical descriptions of the implant’s host architecture and network communications.

Ransomware   Threat

Read through the following case studies and learn from other Australians about how ransomware has affected them.

Don’t take BADCANDY from strangers – How your devices could be implanted and what to do about it   Advisory

Oct 31, 2025 - ASD recommends that system operators take the following actions to remove the BADCANDY implant if compromised and to mitigate the risk of re-exploitation.

Secure your social media   Guidance

Jul 29, 2024 - Keep your social media secure by using these tips. Learn how to protect your accounts, privacy and information.

People’s Republic of China-Linked Actors Compromise Routers and IoT Devices for Botnet Operations   Advisory

Sep 19, 2024 - Cyber actors may have used botnet to compromise thousands of Internet-connected devices.

Hacking   Threat

Jan 5, 2023 - Hacking refers to unauthorised access of a system or network, often to exploit a system’s data or manipulate its normal behaviour.

Critical Infrastructure Uplift Program (CI-UP)   Program

Apr 16, 2024 - The Critical Infrastructure Uplift Program (CI-UP) offers a range of services that assist critical infrastructure (CI) partners to improve their resilience against cyberattacks.

Securing edge devices  

Feb 4, 2025 - Malicious actors often target internet-facing edge devices to gain unauthorised access to enterprise networks. Learn how to secure edge devices such as routers, firewalls and VPN concentrators.

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.

"Bulletproof" hosting providers   Publication

Jan 22, 2025 - Bulletproof hosting (BPH) providers lease cybercriminals a virtual and/or physical infrastructure from which to operate. BPH providers are a specific class of internet infrastructure service that enables malicious actors (including cybercriminals) to host illicit content and run operations on the internet.

Report and recover from malware   Guidance

Nov 10, 2023 - If you’ve fallen victim to a malware attack, find out what to do and who to contact.

Report and recover from scams   Guidance

Apr 11, 2023 - If someone has stolen your money or personal information, find out what to do and who to contact. We also provide advice on how to avoid scams in future.

Online shopping   Guidance

Nov 7, 2023 - Be secure when shopping online.

Easy steps to secure yourself online   Guidance

Apr 7, 2021 - Reduce the risk of being targeted by cybercriminals by following these easy steps.

Report  

Apr 11, 2023 - Report a cybercrime, incident or vulnerability.

Guidelines for system management   Advice

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

Serious vulnerabilities in Atlassian products including Confluence, Jira and Bitbucket   Alert

Dec 7, 2023 - The Australian Signals Directorate’s Australian Cyber Security Centre (ACSC) is concerned about serious vulnerabilities in certain Atlassian products (CVE-2023-22522, CVE-2023-22523 and CVE-2022-1471) which are fixed by recent patches. Operators are urged to review Atlassian’s advice and implement recommended mitigations before exploitation begins.

Guidelines for communications infrastructure   Advice

Sep 4, 2025 - This chapter of the Information security manual (ISM) provides guidance on communications infrastructure.

Privacy Awareness Week 2023   News

Apr 28, 2023 - The Australian Cyber Security Centre (ACSC) is supporting with the Office of the Australian Information Commissioner (OAIC) to support Privacy Awareness Week.