Secure Boot is one feature of the latest Unified Extensible Firmware Interface (UEFI) 2.3.1 specification (Errata C). The feature defines an entirely new interface between operating system and firmware/BIOS. When enabled and fully configured, Secure Boot helps a computer resist attacks and infection from malware. Secure Boot detects tampering with boot loaders, key operating system files, and unauthorized option ROMs by validating their digital signatures. Detections are blocked from running before they can attack or infect the system.