Information
USB storage provides a means to transfer and store files insuring persistence and availability of the files independent of network connection status. Its popularity and utility has led to USB-based malware being a simple and common means for network infiltration and a first step to establishing a persistent threat within a networked environment. Restricting USB access on the system will decrease the physical attack surface for a device and diminish the possible vectors to introduce malware.
Solution
Edit or create a file in the /etc/modprobe.d/ directory ending in .conf Example: vim /etc/modprobe.d/usb-storage.conf
and add the following line: install usb-storage /bin/true Run the following command to unload the usb-storage module: rmmod usb-storage