Quantum computing alone—just one of three main areas of emerging quantum technology. Security researchers have been busy developing a number of alternative cryptographic systems that are seen as less likely to succumb to a quantum attack, called post-quantum or quantum-safe. But researchers might also discover better quantum algorithms in the future that can beat these systems. Security researchers have been busy developing a number of alternative cryptographic systems that are seen as less likely to succumb to a quantum attack, called post-quantum or quantum-safe. But researchers might also discover better quantum algorithms in the future that can beat these systems.