Hello,
We've seen that it is possible to bypass USB device control if VirtualBox is installed on the computer.
Indeed, even if you block all USB Storage Device, the user will be able to connect the USB device to the VirtualBox and use it.
He can then copy files from/to the host operating system if he connects a share to a local folder.
We tried to block the "VirtualBox USB" device but it doesn't work.
That would be great if you could add this feature in a future release.
Regards,
Bertrand