Which tool can be used to silently copy files from USB devices?

USB Grabber typically refers to hardware or software that captures USB video or audio signals, or intercepts USB protocol traffic, not a tool that copies files from storage devices.

USB Dumper runs silently in the background and automatically copies all files from any USB storage device inserted into the host machine without any visible prompt or notification, making it a tool used for covert data exfiltration or unauthorized evidence collection.

A USB Sniffer is used to monitor and capture USB bus communications between a host and connected device at the protocol level, not to copy files from USB storage.

USB Snoopy is not a recognized or documented tool associated with silently copying files from USB storage devices.