Problem Statement
What does secure boot in modern operating systems ensure?
Explanation
Secure boot is a security standard that ensures that only firmware or software signed by trusted authorities runs during boot time. It verifies the bootloader and kernel before handing control over, helping prevent rootkits or boot-time malware from compromising the system. Mentioning secure boot in OS security interviews shows awareness of end-to-end protection. Many OS security lore sources list this.