Researchers at the Ben-Gurion University of the Negev (BGU) have identified a method to exfiltrate data from computers using a combination of malware and a hardware implant to monitor the signal being transmitted through the power lines. The method—which the authors dubbed PowerHammer in a report—is yet another attack against so-called air-gapped computers, which are physically and logically isolated from unsecured networks.
The PowerHammer method has two variants. The “line-level” variant is the faster of the two, and is possible to exploit if attackers can compromise the power lines inside the target building. The “phase-level” variant is substantially slower, though can be exploited from the outside electrical service panel.
Read more about the newly discovered method which allowed the researchers to exfiltrate data at 1000 bits per second on TechRepublic.