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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.
Report and recover from business email compromise Guidance
Jul 14, 2023 - Step-by-step guidance on how to respond to and recover from email compromise and impersonation attempts.
Gootkit Loader continues to be used on multiple Australian networks Advisory
Dec 23, 2022 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) continues to observe instances of Gootkit JavaScript (JS) Loaders on multiple Australian networks in 2022. Open source reporting also indicates continued Gootkit activity.
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).
Hardening Microsoft 365, Office 2021, Office 2019 and Office 2016 Publication
Jul 24, 2023 - Workstations are often targeted by malicious actors using malicious websites, emails or removable media in an attempt to extract sensitive information. Hardening applications on workstations is an important part of reducing this risk.
New fact sheet for critical infrastructure leaders – actions to mitigate PRC state-sponsored cyber activity News
Mar 20, 2024 - The fact sheet provides guidance for critical infrastructure leadership to protect their infrastructure and critical functions from Volt Typhoon – a state-sponsored cyber actor linked to the People’s Republic of China (PRC).
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.
Detecting socially engineered messages Publication
Oct 6, 2021 - Socially engineered messages pose a significant threat to organisations. They can have a big impact, helping malicious actors access accounts, systems or sensitive information. Learn how to spot a socially engineered message, including through email, SMS, social media or messaging apps.
Guidelines for communications infrastructure Advice
Mar 18, 2025 - This chapter of the Information security manual (ISM) provides guidance on communications infrastructure.
Email scammers impersonating the ASD's ACSC Alert
Feb 3, 2025 - Email scammers are impersonating the ASD's ACSC sending out phishing emails to the public with the email content suggesting to download a malicious antivirus program.
Business resources
Apr 11, 2023 - Protecting your business from cybercriminals is vital in keeping your people and systems secure. Learn how to protect your business from cyberthreats.
2020-001-4: Remediation for critical vulnerability in Citrix Application Delivery Controller and Citrix Gateway Advisory
Jan 13, 2020 - On 19 January 2020, Citrix released patches for two versions of the Citrix Application Delivery Controller (ADC) and Citrix Gateway appliances. Citrix expects to have patches available across all supported versions of Citrix ADC, Citrix Gateway and Citrix SD-WAN WANOP before the end of January 2020.
"Bulletproof" hosting providers Publication
Jan 22, 2025 - Bulletproof hosting (BPH) providers lease cybercriminals a virtual and/or physical infrastructure from which to operate. BPH providers are a specific class of internet infrastructure service that enables malicious actors (including cybercriminals) to host illicit content and run operations on the internet.
An introduction to Artificial Intelligence News
Nov 24, 2023 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) has released an introduction to Artificial Intelligence (AI).
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.
The Case for Memory Safe Roadmaps – Joint Cyber Security Guide News
Dec 7, 2023 - In partnership with our international partners we released a joint cyber security guidance on Secure-by-Design memory safe roadmaps.
Password managers Guidance
Jul 10, 2024 - Learn how to create and store passwords in a secure location for your important accounts.
Joint guide for cybersecurity best practices for Smart Cities News
Apr 20, 2023 - This guide provides three recommendations to help communities strengthen their cyber posture.
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.
How the ASD's ACSC can help during a cyber security incident News
Sep 11, 2023 - The Australian Signal’s Directorate’s Australian Cyber Security Centre’s (ASD's ACSC) incident management capabilities provide technical advice and assistance to support Australian organisations through a cyber security incident response.
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.
After you've made a purchase Guidance
Once you’ve made a purchase you still need to remain vigilant. Cybercriminals can target you even after you’ve made a purchase on a legitimate website. Learn what to look out for after you’ve bought something online.
Essential Eight Assessment Course News
Jul 4, 2023 - Today, the Australian Signals Directorate has launched the Essential Eight Assessment Course pilot in collaboration with TAFEcyber.
If things go wrong Guidance
If you think you're a victim of a scam, there are steps you can take to protect yourself from further harm.
Join the Cyber Threat Intelligence Sharing service through Sentinel News
Mar 20, 2024 - The Australian Signals Directorate’s (ASD’s) Cyber Threat Intelligence Sharing (CTIS) is a two-way sharing platform that enables government and industry partners to receive and share information about malicious cyber activity at machine speed.
Review your email account security Guidance
Feb 19, 2025 - How to check your email account security for Gmail and Outlook.
Iranian Government-Sponsored APT Cyber Actors Alert
Nov 17, 2021 - FBI and CISA have observed an Iranian government-sponsored APT group that are exploiting vulnerabilities to gain access to systems. The APT group has exploited the same Microsoft Exchange vulnerability in Australia.
Vulnerability in Ivanti Endpoint Manager Mobile (EPMM) Alert
Jul 25, 2023 - This Alert is relevant to Australians who are running Ivanti EPMM. This alert is intended to be understood by slightly more technical users. Users are encouraged to immediately apply any available patches.
Limited use obligation is now law News
Dec 10, 2024 - On 29 November 2024, the Intelligence Services and Other Legislation Amendment (Cyber Security) Act 2024 became law.
Revamped guide to protect Australian businesses against cyber threats News
Jun 22, 2023 - Australian businesses have a new source of help to understand and combat cyber threats through the refreshed Small Business Cyber Security Guide and new video developed by the The Australian Signals Directorate’s Australian Cyber Security Centre (ASD's ACSC).