Veeam Backup & Replication has several roles and for some of them you can use a Linux OS to implement specific roles. With the recent release of Veeam Backup & Replication 13 (actually only for Linux) ...
Linux: Varies depending on the distribution and desktop environment (e.g., GNOME, KDE). Windows: Vulnerable to malware, requires antivirus software. macOS: More secure than Windows, but still ...