Overview
The Australian Information Security Manual (ISM) is the government’s principal cybersecurity framework developed by the Australian Signals Directorate (ASD). Its purpose is to provide organizations with a structured, risk-based approach to safeguarding information and technology systems against evolving cyber threats, ensuring resilience and compliance with national security standards.
The ISM is designed for chief information security officers, IT managers, and cybersecurity professionals across government agencies, defense, and critical infrastructure sectors. It also serves as a reference for private sector organizations that handle sensitive or high-value data, offering practical guidance on implementing security controls, managing risks, and aligning with broader governance frameworks.
Key elements of the ISM include detailed cyber security principles, recommended practices for securing both IT and operational technology environments, and guidance on incident response and system hardening. By following the ISM, organizations can strengthen their defenses, meet regulatory obligations, and contribute to Australia’s overall cyber resilience.