Bare metal programming refers to writing software that runs directly on a computer's hardware without the support of an operating system or high-level abstractions. In cybersecurity, this approach is used to minimize attack surfaces, improve performance, and maintain precise control over system resources. Bare metal code interacts directly with hardware components such as memory, processors, and peripherals, making it common in embedded systems, firmware development, and low-level security applications. While it offers enhanced security and efficiency, bare metal programming requires deep hardware knowledge and careful management of resources, as there is no OS to handle errors or provide standard services.