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Medibank Private Cyber Security Incident   Alert

Dec 1, 2022 - ASD’s Australian Cyber Security Centre is working closely with Medibank Private following the recent incident.

People’s Republic of China (PRC) State-Sponsored Cyber Actor Living Off the Land to Evade Detection   Alert

May 25, 2023 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD's ACSC), in conjunction with the United States (US) National Security Agency (NSA) its international partners, has released a Cybersecurity Advisory regarding a PRC state-sponsored cyber actor conducting activity impacting US critical infrastructure (CI) sectors. Because of the potential risk to CI sectors outside the US, all organisations are encouraged to review the published Advisory and report any malicious activity to the ASD's ACSC.

The silent heist: cybercriminals use information stealer malware to compromise corporate networks   Advisory

Sep 2, 2024 - Information stealer malware steals user login credentials and system information that cyber threat actors exploit, predominantly for monetary gain. Information stealers have been observed in attacks against multiple organisations and sectors worldwide, including Australia. This advisory provides readers with cyber security guidance on information stealers, including threat activity and mitigation advice for individuals and organisations.

Domain Name System security for domain resolvers   Publication

Oct 6, 2021 - This publication explores DNS security for recursive resolution servers. It also shares helpful strategies to reduce the risk of DNS resolver subversion or compromise.

IRAP Consumer Guide   Program page

Dec 15, 2020 - An IRAP Assessor will assist you by helping you to understand and implement security controls and recommendations to protect your systems and data.

ASD's ACSC Annual Cyber Threat report 2020-21   News

Sep 16, 2021 - The Assistant Minister for Defence, The Hon Andrew Hastie MP, released the Australian Signals Directorate’s Australian Cyber Security Centre's (ASD’s ACSC) Annual Cyber Threat Report 2020-21.

Advisory 2020-008: Copy-paste compromises - tactics, techniques and procedures used to target multiple Australian networks   Advisory

Sep 16, 2020 - This advisory details the tactics, techniques and procedures (TTPs) identified during the Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) investigation of a cyber campaign targeting Australian networks. These TTPs are captured in the frame of tactics and techniques outlined in the MITRE ATT&CK framework.

Citrix Products NetScaler ADC and NetScaler Gateway Vulnerabilities   Alert

Nov 29, 2023 - A malicious actor can exploit the vulnerability to execute code remotely without authentication. Organisations using Citrix products NetScaler ADC and NetScaler Gateway, possibly including Government and medium to large organisations. Ensure the latest release of NetScaler ADC and NetScaler Gateway have been installed.

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.

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.

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.

Exploring Memory Safety in Critical Open Source Projects   Publication

Jun 27, 2024 - This publication follows the December 2023 release of The Case for Memory Safe Roadmaps, which recommended software manufacturers create memory safe roadmaps, including plans to address memory safety in external dependencies, which commonly include open source software (OSS). Today’s publication provides a starting point for these roadmaps by investigating the scale of memory safety risk in selected OSS.

Guidelines for personnel security   Advice

Jul 3, 2025 - This chapter of the Information security manual (ISM) provides guidance on personnel security.

#StopRansomware: BianLian Ransomware Group   Advisory

Nov 21, 2024 - The Federal Bureau of Investigation (FBI), Cybersecurity and Infrastructure Security Agency (CISA), and Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) are releasing this joint Cybersecurity Advisory to disseminate known BianLian ransomware and data extortion group IOCs and TTPs identified through FBI and ASD's ACSC investigations as of March 2023.

Critical remote code execution vulnerability found in the Log4j library   Alert

Dec 21, 2021 - A vulnerability (CVE-2021-44228) exists in certain versions of the Log4j library. A malicious cyber actor could exploit this vulnerability to execute arbitrary code. Australian organisations should apply latest patches immediately where Log4j is known to be used.

Privacy  

Oct 24, 2022 - The cyber.gov.au website, including the cyber incident reporting portal (ReportCyber), is operated by the Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC). The ASD's ACSC is part of the Australian Signals Directorate (ASD), an Australian Government agency.

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.

2022 Top Routinely Exploited Vulnerabilities   Advisory

Aug 4, 2023 - This advisory provides details on the Common Vulnerabilities and Exposures (CVEs) routinely and frequently exploited by malicious cyber actors in 2022 and the associated Common Weakness Enumeration(s) (CWE).

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.

Guidelines for media   Advice

Jul 3, 2025 - This chapter of the Information security manual (ISM) provides guidance on media.

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.

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.

Cloud computing security for executives   Publication

Jan 18, 2024 - This publication is designed to provide executives from organisations looking to utilise cloud computing services an overview of the components that make up ‘cloud’ and help understand the security risks to be considered when using cloud computing.

User education  

Apr 11, 2023 - This page lists publications on cybersecurity that relate to the behaviour of people and virtual communities of people.

Protecting your business and employees  

Apr 11, 2023 - Cybercriminals can attack your business and employees at any time. Follow these resources to find out how to make your business and employees cyber secure.

Essential Eight maturity model FAQ   Publication

Oct 28, 2024 - This publication provides answers to frequency asked questions on how to implement the Essential Eight.

Information security manual  

Sep 26, 2024 - The Information security manual (ISM) is a cybersecurity framework that an organisation can apply, using their risk management framework, to protect their information technology and operational technology systems, applications and data from cyberthreats.

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.

Antivirus software   Guidance

Apr 11, 2023 - The consequences of viruses, spyware and other malicious software can be serious and far reaching. Follow our guidance about using antivirus software.

Network hardening  

Apr 11, 2023 - This page lists publications on the hardening of network infrastructure.