“At this rate, it would take around 2.2 hours to exfiltrate 1 megabyte of data, so RAMBO is more suitable for stealing small amounts of data like text, keystrokes, and small files.”
Mordechai Guri’s team turns memory bus traffic into a radio that leaks up to 1,000 bits per second to a cheap software-defined radio. A password goes out in under 1.3 seconds, and slow transmissions work up to 7 meters away. It still needs malware planted on the machine first. The recommended fixes are Faraday cages and jamming, which says the air gap was never the whole defense.