Sounds from your hard disk drive can even be used to steal a PC’s data
Researchers have found a way to steal a PC’s data by using the mechanical noise coming from the hard disk drives inside.
It’s not a very practical hack, but the scheme has been designed for “air-gapped” systems, or computers that have been sectioned off from the Internet.
The researchers at Ben-Gurion University of the Negev in Israel have been studying how to use sound to extract information from air-gapped computers. In June, they showed that even a PC’s cooling fans can be controlled to secretly transmit data, including passwords and encryption keys.