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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.

Critical vulnerabilities in ‘ownCloud’ file share   Alert

Nov 29, 2023 - The Australian Signals Directorate’s Australian Cyber Security Centre (ACSC) is aware of multiple critical vulnerabilities affecting the file sync and sharing software ‘ownCloud’. This primarily impacts self-hosted instances of the open-source product. Those impacted should apply the patches available and consider the workarounds made available by the vendor.

Remote code execution vulnerability present in Atlassian Confluence Server and Data Center   Alert

Jun 5, 2022 - A critical unauthenticated remote code execution vulnerability (CVE-2022-26134) has been identified in all supported versions of Atlassian Confluence Server and Data Center. The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) recommends organisations restrict internet access to and from affected devices.

Multiple high-severity vulnerabilities in F5 products and incident impacting F5   Alert

Oct 16, 2025 - F5 has released multiple security advisories affecting BIG-IP, BIG-IP Next, F5OS, and Silverline products. The most critical issues include vulnerabilities in SCP/SFTP, SSL/TLS, HTTP/2, and TMM components, with several rated high (CVSS up to 8.8). Exploitation could allow remote code execution, data exposure, or denial of service.

Advisory 2021-004: Active exploitation of ForgeRock Access Manager / OpenAM servers   Advisory

Jul 9, 2021 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD's ACSC) has identified targeting and compromise of Australian organisations with vulnerable internet-accessible servers running ForgeRock Access Manager (ForgeRock AM). ForgeRock AM was previously known as OpenAM. The ASD's ACSC has observed malicious actors exploiting the vulnerability in ForgeRock AM/OpenAM to gain initial access to networks in multiple organisations, and facilitate further access within these networks. On 7 July 2021 the ASD's ACSC alerted organisations that this vulnerability was being actively exploited. This ASD's ACSC advisory provides recommendations for securing ForgeRock AM against vulnerability CVE-2021-35464, and advice on identifying potential successful exploitation of this vulnerability.

Connecting to public Wi-Fi and hotspots   Guidance

Apr 11, 2023 - Public Wi-Fi hotspots are found everywhere in places like your local shops, cafes, hotels and even at some parks. They can be a convenient way to access the internet when you are out, have poor reception or are travelling overseas. Learn more about connecting to public Wi-Fi and hotspots securely.

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.

Bring Your Own Device for executives   Publication

Oct 6, 2021 - Bring Your Own Device (BYOD) scenarios enable organisations to take advantage of new technologies faster. It also has the potential to reduce hardware costs and improve organisational productivity and flexibility. However, BYOD also introduces new risks to an organisation’s business and the security of its information, which need to be carefully considered before implementation.

Multiple vulnerabilities present in the Spring Framework for Java   Alert

Apr 4, 2022 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) is aware of media reporting relating to multiple potential vulnerabilities, including the so-called SpringShell vulnerability, in the Java Spring framework and its execution environments. These vulnerabilities pose a threat to organisations running applications on the web which contain components using the Java Spring framework.

Malicious insiders   Threat

Jun 23, 2020 - Malicious insiders can be employees, former employees, contractors or business associates who have legitimate access to your systems and data, but use that access to destroy data, steal data or sabotage your systems. It does not include well-meaning staff who accidentally put your cyber security at risk or spill data.

ForgeRock Open AM critical vulnerability   Alert

Jul 7, 2021 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) has observed active exploitation of a vulnerability in ForgeRock OpenAM (reported as CVE-2021-35464) against a number of Australian organisations. The ASD’s ACSC strongly recommends organisations urgently apply available patches or workarounds to mitigate the risk of this vulnerability being exploited.

ASD's ACSC Threat Report 2016   Reports and statistics

Oct 15, 2016 - This is the second Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) Threat Report. It continues to reflect on the experience, focus, and mandates of the ASD's ACSC’s member organisations. The report provides an insight into what the Centre has been seeing, learning, and responding to, focusing on specific areas of change or new knowledge obtained.

2020-002: Critical vulnerabilities for Microsoft Windows   Alert

Jan 15, 2020 - On 15 January 2020 (AEDT), Microsoft released security patches for three critical and one important vulnerabilities in the Microsoft Remote Desktop Client, Remote Desktop Gateway and the Windows operating system. The ACSC recommends that users of these products apply patches urgently to prevent malicious actors from using these vulnerabilities to compromise your network.

Active exploitation of vulnerability in Microsoft Internet Information Services   Alert

May 22, 2020 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) is aware that sophisticated actors are actively exploiting a deserialisation vulnerability existing in all versions of Microsoft’s Internet Information Services (IIS) using the .NET framework (.NET). The vulnerability exploits the service’s VIEWSTATE parameter to allow for remote code execution by unauthorised users.

Supply chain compromise of 3CX DesktopApp   Alert

Mar 31, 2023 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) is aware of a reported supply chain compromise affecting the 3CX DesktopApp, allowing malicious actors to conduct multi-stage attacks against users of the legitimate software. Australian users of affected versions of 3CX DesktopApp should immediately follow the vendor’s advice and investigate for signs of malicious activity.

ACSC Threat Report 2017   Reports and statistics

Oct 15, 2017 - This is the third Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) Threat Report. It continues to reflect on the experience, focus, and mandates of the ASD’s ACSC’s member organisations. The report provides an insight into what the Centre has been seeing, learning, and responding to, focusing on specific areas of change or new knowledge obtained.

Multiple Vulnerabilities In Ivanti Endpoint Manager Mobile (Ivanti EPMM)   Alert

May 14, 2025 - The Australian Signals Directorate’s (ASD) Australian Cyber Security Centre (ACSC) is aware of two vulnerabilities, one medium and one high severity, in Ivanti Endpoint Manager Mobile (EPMM). The ASD’s ACSC recommends organisations patch to the latest version of Ivanti EPMM, available through Ivanti’s download portal, and investigate whether their systems have been compromised.

2023-03: ASD's ACSC Ransomware Profile – Lockbit 3.0   Advisory

Jun 15, 2023 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) is aware of Lockbit 3.0 which is the newest version of Lockbit ransomware. It is used by cybercriminals to conduct ransomware attacks against multiple sectors and organisations worldwide, including Australia. Once gaining access to a victim’s environment, cybercriminals use this ransomware for similar purposes as other variants such as encrypting their data, and extorting a ransom to return access to the sensitive files.

2023-01: ASD's ACSC Ransomware Profile - Royal   Advisory

Jan 24, 2023 - The Australian Signals Directorate's Australian Cyber Security Centre (ASD's ACSC) is aware of a ransomware variant called Royal, which is being used by cybercriminals to conduct ransomware attacks against multiple sectors and organisations worldwide, including Australia. Once gaining access to a victim’s environment, cybercriminals use this ransomware for similar purposes to other variants such as encrypting their data and extorting a ransom to return access to the sensitive files.

ISM OSCAL v2025.12.9  

Dec 9, 2025 - ISM OSCAL v2024.10.8 - based on December 2025 Information Security Manual (ISM) and OSCAL version 1.1.2.