Search

Threat update: COVID-19 malicious cyber activity 20 April 2020   Advisory

Apr 20, 2020 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC) continues to receive reports from individuals, businesses and government departments about a range of different COVID-19 themed scams, online frauds and phishing campaigns. This threat update is about raising awareness of the evolving nature of COVID-19 related malicious cyber activity impacting Australians.

The Commonwealth Cyber Security Posture in 2022   Reports and statistics

Dec 16, 2022 - The Commonwealth Cyber Security Posture in 2022 (the report) informs Parliament on the implementation of cyber security measures across the Commonwealth government, for the period January 2021 to June 2022. As of June 2022, the Commonwealth comprised 97 non-corporate Commonwealth entities (NCCEs), 71 corporate Commonwealth entities (CCEs) and 17 Commonwealth companies (CCs).

Understanding Ransomware Threat Actors: LockBit   Advisory

May 8, 2024 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD's ACSC) alongside international partners have released a joint advisory on the ransomware variant LockBit. It functions as an affiliate-based Ransomware-as-a-Service (RaaS) model where affiliates are recruited to conduct ransomware attacks using LockBit ransomware tools and infrastructure.

Gateway security guidance package: Gateway security principles   Publication

Jul 29, 2025 - Guidance written for audiences responsible for the procurement, operation and management of gateways.

Report a cyber security incident   Service

If you are reporting fraud or cybercrime, please refer to the ReportCyber – Cybercrime page.

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.

Advisory 2020-009: Recommendations to mitigate APT actors targeting health sector and COVID-19 essential services   Advisory

May 8, 2020 - The ACSC recommends that organisations in the health sector implement the following cyber security mitigations:

IRAP application form   Program

May 7, 2024 - IRAP application form

Guidelines for system management   Advice

Dec 4, 2025 - This chapter of the Information security manual (ISM) provides guidance on system management.

Phishing   Threat

Mar 19, 2023 - Learn about phishing attacks and know what to do if you've been targeted.

Types of scams   Guidance

Learn about the common types of scams, how to identify them and how to recover from them.

Secure administration   Publication

Oct 6, 2021 - Privileged access allows administrators to perform their duties, and is often seen as the ‘keys to the kingdom’. This publication provides guidance on how to implement secure administration techniques as part of the management of privileged access.

Security configuration guide: Apple iOS 14 devices   Publication

Oct 6, 2021 - ASD has developed this guide to assist Australians to understand risks when deploying iOS 14 devices and the security requirements that need to be met to allow them to handle classified data.

Essential Eight maturity model   Publication

Nov 27, 2023 - This publication provides advice on how to implement the Essential Eight.

While you are shopping   Guidance

The best way to avoid being a victim of cybercrime is to be informed. It is really important to know how to secure your device and recognise a fake website or scammer.

Information stealer malware   Guidance

Jul 15, 2025 - Information stealer malware is a type of malware designed to steal sensitive data from devices. This can include user credentials, browser data and more.

Scammers impersonating police to target victims for cryptocurrency/seed wallet theft   Alert

Nov 13, 2025 - The ASD’s ACSC is aware that criminals are using Australia’s national cybercrime reporting channel and impersonating police to try to scam Australians out of funds from their cryptocurrency or seed wallets.

Essential Eight maturity model and ISM mapping   Publication

Oct 2, 2024 - This publication provides a mapping between the Essential Eight and the controls within the Information security manual (ISM).

Advanced Persistent Threat (APT) actors targeting Australian health sector organisations and COVID-19 essential services   Alert

May 8, 2020 - The Australian Signals Directorate’s Australian Cyber Security Centre (ASD's ACSC) is aware that Advanced Persistent Threat (APT) actors are actively targeting health sector organisations and medical research facilities.

Hardening Microsoft Windows 11 workstations   Publication

Jan 23, 2026 - This publication provides recommendations on hardening workstations using Enterprise and Education editions of Microsoft Windows 11. While this publication refers to workstations, most recommendations are equally applicable to servers (with the exception of Domain Controllers) using Microsoft Windows Server. Security features discussed in this publication, along with the names and locations of Group Policy settings, are taken from Microsoft Windows 11 version 25H2.