Israeli researchers from the University of Ben Gurion published a research during which they managed to break into a system behind an Air-Gap wall, a security method to physically isolate devices’s local network and inside a Faraday room, generating a complex isolating scenario, if not the biggest used in a similar research once.
Mordechai Guri who headed the researchers team managed to prove it is possible to transfer data from an offline device to a nearby device through the noise produced by fan coolers by changing the air temperatures in the patterns a PC can detect using thermal sensors or even through the blinking of the HD LEcD when streaming data from a PC to a Quadcopter drone close to a window”
Mordechai and his workmates who researched the subject for 4 years explained about the Faraday room:
“While the Faraday room can block electromagnetic signals emanating from computers, the magnetic radiation of low frequency is disseminated in the air penetrating the metalic shields of the room. This is the reason why a compass works inside a Faraday room, hackers can exploit this magnetic channel as cover and get sensitive data from PCs, tablets, laptops, etc.”
This is not the first time an Israeli teams manages to break into an offline computer, in the past israeli hackers managed to use the victim’s computer screen as antenna to transfer data.