A massive supply chain attack targeting the Arch User Repository (AUR) has compromised more than 400 community-maintained packages, with attackers injecting malicious build scripts designed to deploy credential-stealing malware and rootkit-style payloads on affected Linux systems.
Nope. Distrobox does not offer any meaningful protection, since its purpose is to integrate with the system. It’s basically meant to make downloading and managing packages from different distros, on the same system, much easier… but it’s not meant to protect and isolate your device the same way that Flatpak or other type of containers do. That baing said, stop relying on Distrobox as a safety measure, and check your recently installed and updated packages since 9th June, to make sure you were not infected.