High Performance Computing (HPC) refers to the use of powerful computer systems and clusters to perform complex calculations and process large volumes of data at high speed. In cybersecurity, HPC is essential for analyzing massive datasets, running simulations, and processing real-time threat intelligence. This capability enables organizations to detect, investigate, and respond to cyber threats more efficiently. HPC is also used in cryptanalysis, vulnerability research, and the development of advanced security algorithms. Its ability to handle computationally intensive tasks makes it a critical asset for national security agencies and enterprises dealing with large-scale cybersecurity challenges.