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System hardening
Oct 31, 2025 - This page lists publications on the hardening of applications and IT equipment.
Email hardening
Oct 31, 2025 - This page lists publications on the hardening of message exchange via electronic mail.
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.
Mobility hardening
Sep 3, 2025 - This page lists advice and resources to help keep mobile devices and mobility tools secure.
Network hardening
Apr 11, 2023 - This page lists publications on the hardening of network infrastructure.
Web hardening
Dec 2, 2020 - This page lists publications on the hardening of services that can be accessed via the World Wide Web.
Hardening systems and applications
Apr 11, 2023 - It is important for all organisations to maintain the cybersecurity of their systems and data.
Guidelines for system hardening Advice
Dec 4, 2025 - This chapter of the Information security manual (ISM) provides guidance on system hardening.
Hardening Microsoft Windows 10 workstations Publication
Sep 4, 2025 - This publication provides recommendations on hardening workstations using Enterprise and Education editions of Microsoft Windows 10. 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 10 version 22H2.
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.
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.
Enhanced visibility and hardening guidance for communications infrastructure Advisory
Dec 4, 2024 - This guide provides network engineers and defenders of communications infrastructure with best practices to strengthen their visibility and harden their network devices against successful exploitation carried out by PRC-affiliated and other malicious cyber actors.
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.
Gateway security guidance package Guidance
Jul 29, 2025 - This page lists publications on the hardening of gateway services.
Cyber threat actors compromising networks of major global telecommunications providers News
Dec 4, 2024 - New guidance is available for network defenders of communications infrastructure to strengthen visibility and harden devices against PRC-affiliated and other malicious cyber actors.
Microsoft Exchange Server security best practices Publication
Oct 31, 2025 - This paper—authored by the National Security Agency (NSA), Cybersecurity and Infrastructure Security Agency (CISA), Australian Signals Directorate’s Australian Cyber Security Centre (ASD’s ACSC), and Canadian Centre for Cyber Security (Cyber Centre)—provides security best practices for administrators on hardening on-premises (on-prem) Exchange.
The Commonwealth Cyber Security Posture in 2025 Reports and statistics
Feb 12, 2026 - The Commonwealth Cyber Security Posture in 2025 informs the Australian Parliament on cyber security measures implemented across the Australian Government for the 2024–25 financial year.
New OT connectivity principles set a higher security bar for organisations News
Jan 15, 2026 - Our latest guidance outlines 8 principles to secure operational technology connectivity, helping organisations reduce exposure, harden boundaries, and strengthen resilience across industrial environments.
Small business
Jun 15, 2023 - Basic steps to protect your business and staff from cyberthreats. Our guide has information and resources to help you and your staff prepare for cyberattacks.
Progress ongoing to improve the Australian Government’s cyber resilience News
Feb 12, 2026 - The 2025 Commonwealth Cyber Security Posture Report highlights ongoing progress in implementing the Australian Signals Directorate’s Essential Eight mitigation strategies.
