https://www.bleepingcomputer.com/news/security/microsoft-uses-ai-to-find-flaws-in-grub2-u-boot-barebox-bootloaders/

Microsoft used its AI-powered Security Copilot to discover 20 previously unknown vulnerabilities in the GRUB2, U-Boot, and Barebox open-source bootloaders.

GRUB2 (GRand Unified Bootloader) is the default boot loader for most Linux distributions, including Ubuntu, while U-Boot and Barebox are commonly used in embedded and IoT devices.