Introduction Australia is standing at the edge of a technological shift that could redefine cyber resilience. With quantum computing on the horizon, the very foundations of data security are under threat. While this technology promises enormous advances in areas like medical research, logistics and AI, it also has the potential to break the cryptographic systems that currently protect government, business and personal data. Quantum computers exploit the principles of quantum mechanics to solve complex problems that classical computers cannot feasibly tackle. Quantum computers use the principles of quantum mechanics to process information in a way that uses qubits, which can exist in multiple states, ...