High Performance Computing (HPC) is a cluster of many servers working in parallel to process workloads that would be too large or too slow for a single machine. In cyber security, HPC matters because speed often comes with complexity: shared storage, job schedulers, network fabrics, and distributed nodes create many places where access control, configuration, or logging can fail.
Attackers may target HPC systems for compute theft, credential abuse, data theft, or to hide activity inside legitimate batch jobs. Defenders also use HPC to run large-scale malware analysis, password auditing, log correlation, and detection models. Secure HPC depends on strong identity management, job isolation, patching, least privilege, and careful monitoring of queues, nodes, and data movement.