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Interactive tools and advice to boost your online safety.
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Common online security risks and advice on what you can do to protect yourself.
Respond to cyber threats and take steps to protect yourself from further harm.
Resources for business and government agencies on cyber security.
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Cyber resources for small businesses News
Feb 11, 2022 - Last December, the Council of Small Business Organisations Australia (COSBOA) co-hosted an Act Now, Stay Secure breakfast at the National Portrait Gallery, along with the Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) and the Department of Home Affairs.
Choosing secure and verifiable technologies: Executive guidance Publication
Dec 5, 2024 - This guide supports senior leaders to enable their organisations to understand their threat environment and make better-informed assessments and decisions to procure secure technologies.
Critical vulnerability present in certain versions of Apple iOS and iPadOS Alert
Oct 13, 2021 - A vulnerability has been identified in certain Apple products which could allow an actor to install malware or perform other actions on a vulnerable device.
Advice, guidance and publications
Nov 3, 2022 - Find the latest cyber security advice, guidance and publications
Programs
Nov 3, 2022 - Find relevant cyber security programs
Risk management of enterprise mobility (including Bring Your Own Device) Publication
Oct 6, 2021 - This publication has been developed to provide senior business representatives with a list of enterprise mobility considerations. These include business cases, regulatory obligations and legislation, available budget and personnel resources, and risk tolerance. Additionally, risk management controls are provided for cybersecurity practitioners.
Important Vulnerabilities in Microsoft’s May 2023 Security Update Alert
May 11, 2023 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) is concerned about vulnerabilities disclosed in Microsoft’s May 2023 Security Update. Government, businesses and individuals should patch their Microsoft products and apply any recommended mitigations.
Guidelines for system hardening Advice
Mar 18, 2025 - This chapter of the Information security manual (ISM) provides guidance on system hardening.
Strategies to mitigate cybersecurity incidents Publication
Feb 1, 2017 - The Australian Signals Directorate (ASD) has developed prioritised mitigation strategies to help organisations mitigate cybersecurity incidents caused by various cyberthreats. This guidance addresses targeted cyber intrusions (i.e. those executed by advanced persistent threats such as foreign intelligence services), ransomware and external adversaries with destructive intent, malicious insiders, ‘business email compromise’, and industrial control systems.
Cybersecurity Best Practices for Smart Cities Publication
Apr 20, 2023 - This guidance is the result of a collaborative effort from the United States Cybersecurity and Infrastructure Security Agency (CISA), the United States National Security Agency (NSA), the United States Federal Bureau of Investigation (FBI), the United Kingdom National Cyber Security Centre (NCSC-UK), the Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC), the Canadian Centre for Cyber Security (CCCS), and the New Zealand National Cyber Security Centre (NCSC-NZ).
Essential Eight maturity model FAQ Publication
Oct 28, 2024 - This publication provides answers to frequency asked questions on how to implement the Essential Eight.
PRC state-sponsored actors compromise and maintain persistent access to U.S. critical infrastructure Advisory
Feb 8, 2024 - The Cybersecurity and Infrastructure Security Agency (CISA), National Security Agency (NSA), and Federal Bureau of Investigation (FBI) assess that People’s Republic of China (PRC) state sponsored cyber actors are seeking to preposition themselves on IT networks for disruptive or destructive cyberattacks against U.S. critical infrastructure in the event of a major crisis or conflict with the United States.
Critical vulnerabilities present in certain versions of Apple iOS, macOS and Safari Alert
Sep 14, 2021 - Vulnerabilities have been identified in certain versions of Apple iOS, macOS and Safari which could allow an actor to install malware or perform other actions on a vulnerable device or computer.
How to manage your security when engaging a Managed Service Provider Publication
Oct 6, 2021 - Understand the actions organisations can take to manage the security risks posed by engaging and authorising network access for managed service providers.
Cyber Security for Operational Technology News
Oct 2, 2024 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD's ACSC) has released new guidance to help critical infrastructure protect their systems and online supply chains.
New joint advisory on Russian military cyber tactics released News
Sep 6, 2024 - Russian military cyber tactics, techniques and procedures targeting global critical infrastructure exposed in new joint advisory.
Foundations for modern defensible architecture Publication
Feb 10, 2025 - The Foundations represent the first step to help organisations adopt a ‘modern defensible architecture’ approach, which will enable them to evolve alongside the threat landscape.
2021-006: ASD's ACSC Ransomware Profile - Lockbit 2.0 Advisory
Aug 5, 2021 - The LockBit ransomware restricts access to corporate files and systems by encrypting them into a locked and unusable format. Victims receive instructions on how to engage with the offenders after encryption. LockBit affiliates have successfully deployed ransomware on corporate systems in a variety of countries and sectors, including Australia, where the Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) is aware of numerous incidents since 2020. LockBit affiliates are known to implement the ‘double extortion’ technique by uploading stolen and sensitive victim information to their dark web site ‘LockBit 2.0’, and threatening to sell and/or release this information if their ransom demands are not met.
Cyber Security Awareness Month 2024 News
Oct 1, 2024 - October is Cyber Security Awareness Month, a time for all Australians to talk about cyber security and take action to protect their devices and accounts.
Report and recover from account compromise Guidance
Nov 10, 2023 - A guide to recovering your account and protecting you against future attacks.
2020-006 Detecting and mitigating exploitation of vulnerability in Microsoft Internet Information Services Advisory
May 22, 2020 - This advisory provides indicators of the activity the Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) has observed and details proactive advice on detecting and mitigating potential exploitation of this vulnerability in Microsoft Internet Information Services.
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.
Sign up for alerts
Nov 14, 2024 - Sign up for alerts on the latest threats and vulnerabilities.
Manic Menagerie Investigation Report Reports and statistics
Jan 29, 2019 - This report details technical findings and mitigation advice related to the extensive compromise of at least eight Australian web hosting providers investigated by the Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) in May 2018.
Critical Infrastructure
Jul 22, 2024 - Technical advice and non-regulatory guidance for critical infrastructure.
Identifying and Mitigating Living Off the Land Techniques Advisory
Feb 8, 2024 - This Guide, authored by the U.S. Cybersecurity and Infrastructure Security Agency (CISA), National Security Agency (NSA), Federal Bureau of Investigation (FBI), and the following agencies (hereafter referred to as the authoring agencies), provides information on common living off the land (LOTL) techniques and common gaps in cyber defense capabilities.
Small Business Google Chromebook and ChromeOS Security Guide Guidance
Nov 12, 2024 - This publication was developed by the Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) with technical input from Chrome Engineering.
Cryptomining Threat
Jun 23, 2020 - Cryptocurrency mining (cryptomining) uses the processing power of computers to solve complex mathematical problems and verify cybercurrency transactions. The miners are then rewarded with a small amount of cybercurrency.
Advisory 2021-002: Active exploitation of vulnerable Microsoft Exchange servers Advisory
Mar 26, 2021 - On 2 March 2021 Microsoft released information regarding multiple exploits being used to compromise instances of Microsoft Exchange Server. Malicious actors are exploiting these vulnerabilities to compromise Microsoft Exchange servers exposed to the internet, enabling the malicious actor to access email accounts and to enable further compromise of the Exchange server and associated networks.
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