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Israeli security researcher Mordechai Guri of Ben-Gurion University has published a study on yet another method of exfiltrating data from an air-gapped network. This time, he found a way to transmit data using radio waves from the CPU, more specifically from its power supply. This method of data exfiltration requires the attacker to be no more than a couple of meters from the CPU. This could not but remind Guri of the social distancing rules during the COVID-19 pandemic, hence the somewhat strange name, COVID-bit.
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