I have a set of Linux workstations that only approved users should be plugging in approved USB storage devices. How can I restrict mounting new USB devices to certain groups? And is there a way to reject unrecognised devices?
How can I lock down USB Stick access on Linux workstation?
linux;permissions;security;usb;usb drive
You probably want to look into a piece of software called USBGuard.  It's designed specifically for handling this.  Unfortunately it's not pre-packaged for many distros, but it is pretty easy to build locally and you probably already have most if not all of the dependencies installed on the systems in question.A custom solution is also possible, but ironically your best reference on how to do that is probably also USBGuard.