Exfiltrate data from air-gapped computers via Wi-Fi [pdf]
arxiv.org
arxiv.org
> In this paper we introduce a new type of covert channel that exploits Wi-Fi to leak data from air-gapped networks. The AIR-FI attack introduced in this paper does not require Wi-Fi related hardware in the air-gapped computers. Instead, we show that an attacker can exploit the DDR SDRAM buses to generate electromagnetic emissions in the 2.4 GHz Wi-Fi bands and encode binary data on top of it. We also show that nearby Wi-Fi receivers, such smartphones, laptops, and Internet of Things (IoT) devices, can receive and decode the modulated data, and then send it to the attacker via the Internet.
No built-in Wi-Fi hardware required, only user-space access needed, and works with-in VMs.