Fusion is a nuclear process in which light atomic nuclei combine to form a heavier nucleus, releasing energy. It is the same basic reaction that powers stars, but on Earth it requires extreme temperatures, precise plasma control, and highly specialized materials. Because it is still under active development, fusion is not a near-term substitute for conventional power generation.
In cyber security, fusion matters because fusion research and future pilot plants rely on digital control systems, scientific instruments, and connected supply chains. Attackers may try to steal research data, disrupt experiments, or tamper with availability and integrity in operational technology networks. Defenders reduce that risk with network segmentation, strong identity controls, hardened endpoints, secure remote access, patch management, and monitoring of industrial control traffic. For critical infrastructure, protecting fusion systems is as much about safeguarding data and control logic as it is about physical safety.