Microsoft has open-sourced LiteBox, a security-focused library operating system. This project aims to minimize the attack surface by reducing the interface to the host system. It supports both kernel-mode and user-mode execution, offering a sandboxed environment.
LiteBox is designed for easy interoperability, focusing on "North" shims and "South" platforms.
Source: Hacker News: Front Page · Summarized by HeadlinesBriefing