Issue Domain backup accessible via multiple domains

[Torsten]

I have multiple customers which can see each others backups when they create one via the Backup Manager. The Backups are placed in the correct locations on the server (so they are not located in one single location but in the Domain specific backup location).

The customers do not share any IDs, users, passwords and they do not use FTP backups or scheduled backups.

The Server uses PLESK ONYX Version 17.5.3 Update #57 is running CentOS Linux 7.4.1708 (Core) as the OS (in case that might be relevant)


Does anyone know a reason for this?

 

[Torsten]

I can also provide more detailed information if someone can tell me what would be useful in helping to diagnose this issue.