What tool is used to silently copy files from USB devices?

• A. USB Sniffer
• B. USB Dumper
• C. USB Keylogger
• D. USB Extractor

Answer: (B)

This is about tools designed to extract data from USB storage without prompting the user. A tool described as a dumper is built to read the filesystem on a USB device and copy or “dump” its contents to the host automatically. That fits the scenario of silently copying files from USB devices because it implies automated data transfer with minimal interaction.

The other tools don’t fit as well. A USB sniffer captures or analyzes data traffic between a USB device and the computer, not directly copying all files. A USB keylogger records keystrokes, not file contents from the USB drive. A USB Extractor isn’t a standard term tied to automatic data dumping from USB storage, so it doesn’t specifically indicate silent file copying like a dumper does.

So, the tool that best matches silently copying files from USB devices is the one described as a dumper.