Experimental malware uses inaudible sound to defeat network air gaps
In a development likely to concern those who believe that a system that's not connected to a network is safe from surveillance, researchers have demonstrated that microphones and speakers built into laptops can be used to covertly transmit and receive data through inaudible audio signals
Read more: Experimental malware uses inaudible sound to defeat network air gaps
Story added 3. December 2013, content source with full text you can find at link above.