This is pretty frightening.
Computer scientists have developed an audio malware prototype that’s capable of establishing communication between devices that do not have an active network connection, Ars Technica reports. Instead, the lab-created malware uses the built-in microphones and speakers to send out a high-frequency signal from an infected computer to a different source. While it has limited use and can only send 20 bits of data per second to up to 65 feet the audio malware concept can still be used to send out significant data, including user and passwords for certain systems. Additionally, the distance can be increased by adding more attacker-controlled devices to repeat the audio signal.
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