### Comment:
How can malware propagate through USB devices?

### REPLY:
Malware can propagate through USB devices by infecting the firmware of the USB controller. This allows the malware to run automatically whenever the USB device is connected to any computer. The malware can then spread to the connected system and any other USB devices connected to it. This method is highly effective and difficult to detect or remove. It is advisable not to share USB devices between different systems to prevent malware propagation.