Mordechai Guri at Israel's Ben-Gurion University of the Negev transmitted stolen data from a personal computer by manipulating the device's power supply.
"By regulating the workload of the CPU [central processing unit], it is possible to govern its power consumption and hence control the momentary switching frequency of the SMPS (switch-mode power supplies)," Guri explained.
"The electromagnetic radiation generated by this intentional process can be received from a distance using appropriate antennas."
Guri said malware installed on a universal serial bus drive could infect the target PC, but suggested banning smartphone use around the computer as a countermeasure.
From PC Magazine
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