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Malicious actors deploying Gootkit Loader on Australian Networks Alert
Aug 27, 2021 - Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) has observed an increase of Gootkit JavaScript (JS) Loaders on Australian networks.
Gateway security guidance package: Overview Publication
Jul 29, 2025 - This page provides an overview of ASD’s Gateway security guidance package.
Hardening Linux workstations and servers Publication
Nov 27, 2023 - This publication has been developed to assist organisations in understanding how to harden Linux workstations and servers.
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.
Exploitation of vulnerabilities affecting Cisco firewall platforms Alert
Apr 25, 2024 - This alert has been written for the IT teams of organisations and government. Entities are strongly encouraged to take immediate action to ensure affected devices are patched and investigate for potential compromise.
Marketing and filtering email service providers Publication
Oct 6, 2021 - This publication provides high level guidance on how to use email service providers (ESPs) in particular deployment scenarios. The considerations and controls described in that publication also apply to ESPs sending email on other organisations’ behalf.
Cyber security incident response planning: Executive guidance Publication
Dec 12, 2024 - The Australian Signals Directorate (ASD) is responsible for monitoring and responding to cyberthreats targeting Australian interests. Reporting cybersecurity incidents to ASD ensures that timely assistance can be provided, if required. This may be in the form of investigations or remediation advice.
New cyber security advice for families News
May 2, 2024 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD's ACSC) has released new guidance to help you protect your family online.
Cloud computing security for tenants Publication
Jan 18, 2024 - This publication is designed to assist an organisation’s cybersecurity team, cloud architects and business representatives to jointly perform a risk assessment and use cloud services securely.
Legacy IT management
Apr 11, 2024 - This page lists publications on managing the risks posed by legacy IT.
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.
Managing the risks of legacy IT: Executive guidance Publication
Jun 12, 2024 - This publication provides high-level and strategic guidance for an organisation’s executive seeking to manage the risks of legacy IT.
Cloud computing
Jan 18, 2024 - This page lists publications on securing the use of cloud computing services.
Australians urged to act on cyber alert News
Dec 15, 2021 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) issued an alert on a vulnerability in the Apache Log4j software library that exposed systems to potential cyberattack.
Cross Domain Solutions
Dec 3, 2020 - This page lists publications on security domains and trust boundaries.
Technical example: User application hardening Publication
Dec 16, 2022 - User application hardening protects an organisation from a range of threats including malicious websites, advertisements running malicious scripts and exploitation of vulnerabilities in unsupported software. These attacks often take legitimate application functionality and use it for malicious purposes. User application hardening makes it harder for cybercriminals to exploit vulnerabilities or at-risk functionality in your organisation’s applications.
Implementing certificates, TLS, HTTPS and opportunistic TLS Publication
Oct 6, 2021 - Transport Layer Security (TLS) is a widely used encryption protocol which enables parties to communicate securely over the internet. Through the use of certificates and Public Key Infrastructure (PKI), parties can identify each other through a trusted intermediary and establish encrypted tunnels for the secure transfer of information.
Information Security Registered Assessor Program (IRAP) News
Dec 15, 2022 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) is further enhancing cyber security assessment and training, improving cyber skills, and creating new cyber careers for Australians through the Information Security Registered Assessor Program (IRAP).
2021-009: Malicious actors deploying Gootkit Loader on Australian Networks Advisory
Aug 27, 2021 - From April 2021, the Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) has received an increase in reporting of malicious actors targeting Australian networks with Gootkit JavaScript (JS) Loaders. Open-source reporting confirms that Gootkit JS Loaders are a precursor to several malware families traditionally used for cybercrime, notably, Gootkit, REvil ransomware, Kronos, or CobaltStrike. The ASD’s ACSC is providing this information to enable organisations to undertake their own risk assessments and take appropriate actions to secure their systems and networks. The ASD’s ACSC will update this advisory if more information becomes available.
Multiple Vulnerabilities in VMware vRealize Hyperic monitoring and performance management product Alert
Nov 8, 2022 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) has identified a number of critical vulnerabilities affecting VMware’s vRealize Hyperic monitoring and performance management product.
Cyber Security Awareness Month 2022 News
Sep 30, 2022 - October is Cyber Security Awareness Month and this year the Australian Signals Directorate’s Australian Cyber Security Centre's (ASD’s ACSC) theme is Have you been hacked?
Critical Vulnerability in FortiOS Alert
Feb 9, 2024 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD's ACSC) is aware of a critical (9.6) vulnerability (CVE-2024-21762) in Fortinet FortiOS devices.
Protecting industrial control systems Publication
Jul 1, 2018 - Industrial control systems are essential to our daily life. They control the water we drink, the electricity we rely on and the transport that moves us all. It is critical that cyberthreats to industrial control systems are understood and mitigated appropriately to ensure essential services continue to provide for everyone.
Secure mobility
Feb 4, 2021 - This page lists publications on mobile device management and usage.
An introduction to securing smart places Publication
Nov 21, 2022 - Smart places, also known as smart cities, are places designed to provide enhanced services to citizens using a collection of smart information technology (IT)-enabled systems and devices that capture, communicate and analyse data. To achieve this purpose, previously discrete technologies and systems are interconnected to allow for large-scale coordination, real-time decision making, and increased visibility and situational awareness of the smart place’s status.
Multiple key vulnerabilities identified in Microsoft products Alert
Oct 13, 2021 - Multiple key vulnerabilities were identified in Microsoft’s 12 October 2021 patch release. While all vulnerabilities addressed in this release are important to mitigate the Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) wishes to highlight several vulnerabilities for priority consideration.
Remote Code Execution Vulnerability In Confluence Data Center and Confluence Server Alert
Jan 17, 2024 - ASD’s ACSC is aware of a vulnerability in Confluence Data Center and Confluence Server (CVE-2023-22527). Organisations are strongly encouraged to take immediate action to ensure affected instances are patched.
Small business cloud security guides: Introduction Publication
Dec 16, 2022 - Securing your business can be a complex task. Among the numerous security priorities and configuration options, it can be difficult to know where to begin. These guides adapt ASD's ACSC’s Essential Eight mitigation strategies and outline an example of how each can be implemented to secure Microsoft 365 capabilities. The technical examples are designed to offer significant protection against cybersecurity incidents while remaining accessible to organisations with limited resources and cybersecurity expertise.
Cybersecurity terminology Advice
Sep 4, 2025 - This chapter of the Information security manual (ISM) provides guidance on cybersecurity terminology.
Sustained targeting of the health sector Alert
Oct 30, 2020 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD's ACSC) has identified a sustained campaign by sophisticated cybercrime actors impacting the Australian health sector.
