Recently, we have been engaged in consulting work and providing DNS training for a major IT corporation, boasting an employee count exceeding 10,000. Thankfully, not every staff member attended the course.

Implement a file system that runs in user space.

Using Microsoft Security Copilot to expedite the discovery process, Microsoft has uncovered several vulnerabilities in multiple open-source bootloaders impacting all operating systems relying on Unified Extensible Firmware Interface (UEFI) Secure Boot. Through a series of prompts, we identified and refined security issues, ultimately uncovering an exploitable integer overflow vulnerability in the GRUB2, U-boot, and Barebox bootloaders.