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Phishing   Threat

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

Identity theft   Threat

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

Russian Military Cyber Actors Target U.S. and Global Critical Infrastructure   Advisory

Sep 6, 2024 - The Federal Bureau of Investigation (FBI), Cybersecurity and Infrastructure Security Agency (CISA), and National Security Agency (NSA) assess that cyber actors affiliated with the Russian General Staff Main Intelligence Directorate (GRU) 161st Specialist Training Center (Unit 29155) are responsible for computer network operations against global targets for the purposes of espionage, sabotage, and reputational harm since at least 2020.

Preventing business email compromise   Guidance

Apr 11, 2023 - There are many easy steps and actions you can take now to protect your business. Learn about the simple, cost-effective and immediately beneficial protective measures you can implement.

Threat Actors Exploit Multiple Vulnerabilities in Ivanti Connect Secure and Policy Secure Gateways   Advisory

Feb 28, 2024 - The Cybersecurity and Infrastructure Security Agency (CISA), Federal Bureau of Investigation (FBI), Multi-State Information Sharing & Analysis Center (MS-ISAC), Australian Signals Directorate’s Australian Cyber Security Center (ASD’s ACSC), and the UK’s National Cyber Security Centre (NCSC), are releasing this joint Cybersecurity Advisory (CSA) in response to the active exploitation of CVE-2023-46805, CVE-2024-21887, CVE-2024-22024, and CVE-2024-21893—multiple vulnerabilities affecting Ivanti Connect Secure and Ivanti Policy Secure gateways.

Types of scams   Guidance

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

Secure your website   Guidance

Jul 29, 2024 - Small business account for over 95% of all businesses in Australia and 72% of them have a website. However, in a world in which websites are increasingly being targeted by cyber criminals, only 36% check for updates every week. For those small businesses with a website, or that are considering one, these three quick wins will help you protect your money, data and reputation.

Guidelines for communications infrastructure   Advice

Mar 18, 2025 - This chapter of the Information security manual (ISM) provides guidance on communications infrastructure.

Cybercrime - getting help   Guidance

Apr 11, 2023 - If something has knocked you offline, check out the following information to help you get back up and running!

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Jun 14, 2020 - Page not found for error 404

Are you protected against ‘fast flux’?   News

Apr 4, 2025 - Bulletproof Hosting Providers are using ‘fast flux’ to cycle quickly through bots and DNS records to bypass detection by network defenders and law enforcement agencies.

Ransomware Playbook   Guidance

Oct 10, 2024 - This interactive guide is here to assist you with taking all of the appropriate steps to prepare for, respond to and recover from a ransomware incident.

Increase in denial-of-service (DoS) attacks against Australian organisations   Advisory

Mar 17, 2025 - ASD's ACSC is aware of an increase in denial-of-service (DoS) attacks, where malicious actors flood websites with internet traffic, making it difficult for legitimate users to access them.

Ransomware   Threat

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

Domain Name System security for domain owners   Publication

Oct 6, 2021 - This publication provides information on DNS security for domain owners. It also shared helpful strategies to reduce the risk of domain misuse.

Report a cyber security incident   Service

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

Cyber threat actors compromising networks of major global telecommunications providers    News

Dec 4, 2024 - New guidance is available for network defenders of communications infrastructure to strengthen visibility and harden devices against PRC-affiliated and other malicious cyber actors.

Critical vulnerability for SAP NetWeaver Application Server (CVE-2020-6287)   Alert

Jul 14, 2020 - On 13 July 2020 (United States EST), enterprise resource planning provider SAP released a security patch for a critical vulnerability affecting the Java component LM Configuration Wizard within the SAP NetWeaver Application Server.

PRC state-sponsored cyber group APT40’s expanding tradecraft and tactics    News

Jul 9, 2024 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) has released a new joint advisory with international partners on the People’s Republic of China (PRC) Ministry of State Security (MSS) tradecraft in action.

Guidelines for system management   Advice

Mar 18, 2025 - This chapter of the Information security manual (ISM) provides guidance on system management.

Security tips for travelling   Guidance

Jul 29, 2024 - Learn how to stay secure while travelling with personal devices.

Detecting and mitigating Active Directory compromises   Publication

Jan 22, 2025 - This publication provides an overview of techniques used to compromise Active Directory, and recommended strategies to mitigate these techniques. By implementing the recommendations in this publication, organisations can significantly improve their Active Directory security, and therefore their overall network security posture.

Secure by Design foundations   Publication

Jul 30, 2024 - ASD’s ACSC's Secure by Design foundations represent a first step in a new approach to assist technology manufacturers and customers to adopt Secure by Design. While the foundations are primarily designed to foster discussion within technology manufacturers on how to best approach Secure by Design, they contain relevant information and actions for technology customers.

How to dispose of your device securely   Guidance

May 18, 2022 - You should consider that any devices you dispose of could be accessed by strangers.

Sextortion campaign - What to do if you receive the email   Advisory

Apr 16, 2020 - In most cases, there is no reason to be concerned. These emails are typically generated in their thousands by online scammers using limited personal details, with the aim of intimidating recipients into paying the ransom.

Revised patch released to disable mitigation against Spectre variant 2   Advisory

Jan 29, 2020 - Intel has confirmed that the microcode updates designed to mitigate Spectre variant 2 (CVE-2017-5715: Branch Target Injection) have introduced an increased risk of system instability, data loss and corruption.

Meltdown and Spectre patches unsuitable for some security products   Advisory

Jan 11, 2020 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) is aware of reporting that a variety of security products (e.g. antivirus solutions) are incompatible with Microsoft's patches for the Meltdown and Spectre vulnerabilities.

Recommendations to mitigate DDoS threats being made against Australian organisations   Advisory

Feb 25, 2020 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) is aware of a number of Denial of Service (DoS) for ransom threats being made against Australian organisations, primarily in the banking and finance sector.

#StopRansomware: LockBit 3.0 Ransomware Affiliates Exploit CVE 2023-4966 Citrix Bleed Vulnerability   Advisory

Nov 29, 2023 - This joint Cybersecurity Advisory (CSA) is part of an ongoing #StopRansomware effort to publish advisories for network defenders that detail various ransomware variants and ransomware threat actors.

ASD's ACSC Advisory 2020-012: Critical remote code execution vulnerability in Windows DNS server (CVE-2020-1350)   Advisory

Jul 15, 2020 - An adversary who successfully exploits the vulnerability could run arbitrary code in the context of the Local System Account. The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) strongly recommends users apply the security patch to their Windows DNS servers to prevent an adversary from exploiting this vulnerability.