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On August 5, 2026, the Australian Cyber Security Centre (ACSC) released frontier AI cyber threat guidance in partnership with the Australian Institute of Company Directors (AICD). The publication, titled "Frontier AI cyber threat considerations for boards of directors," addresses how advances in frontier AI models are reshaping the cyber threat landscape and creating new vulnerabilities that cybercriminals can exploit. The guidance recognises that as frontier AI models become more sophisticated, they enable threat actors to identify and exploit security weaknesses more effectively, increasing the risk of AI-enabled cyber attacks. The publication provides practical recommendations to help organisations strengthen their governance frameworks, improve cyber security preparedness, and enhance their overall cyber security posture. It outlines specific actions that boards of directors and senior leaders can implement across the cyber security lifecycle: prevention, detection, response, and recovery from AI-related cyber security incidents. Recommended priorities include: Immediate Secure attack surfaces: Organisations should establish and enforce secure configuration baselines, remove unnecessary services and insecure settings, and continuously monitor systems for configuration drift. Reduce software vulnerabilities: They should conduct continuous vulnerability assessments, prioritise remediation according to risk and verify that corrective actions are effective. Short term Address legacy technology: Legacy systems should be identified and managed through compensating controls, enhanced monitoring and assurance until they can be replaced. Strengthen identity and access controls: Recommended measures include removing default and unused accounts and securely storing credentials, tokens and authentication keys. Prepare for incidents: Organisations should review and regularly exercise cyber-incident-response, business-continuity and disaster-recovery arrangements to ensure critical operations can continue during an attack. Medium term Organisations may use appropriately controlled and human-supervised AI to support software vulnerability identification and remediation, and vulnerability scanning and security assessments. Longer term Systems should be designed, developed, deployed and maintained using secure-by-design and secure-by-default principles. This includes controlling authorised access, protecting data, minimising default privileges, securing software build processes and removing unnecessary functionality.