Researchers at Ben-Gurion University of the Negev in Israel have been studying how to use sound to extract information from air-gapped computers. They found that their hack could transmit enough 0s and 1s for a stream of data, including passwords. However, the transmission rate is quite slow at only 180 bits per minute, and the range is only effective at up to six feet. To prevent this kind of hacking, owners should consider using solid-state drives, which have no moving parts.”]