Physical prongs on input/out circuits?

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Reuters.com > U.S. researchers show computers can be hijacked to send data as sound waves

Wed Aug 5, 2015 6:00am EDT – LAS VEGAS | By Joseph Menn

A team of security researchers has demonstrated the ability to hijack standard equipment inside computers, printers and millions of other devices in order to send information out of an office through sound waves.

The attack program takes control of the physical prongs on general-purpose input/output circuits and vibrates them at a frequency of the researchers’ choosing, which can be audible or not. The vibrations can be picked up with an AM radio antenna a short distance away.

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:confused: What physical prongs on input/output circuits?

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rotflmao

they may do something
but i wont buy they are doing what is described

audio sound wave vibrations are not picked up by a radio that senses RF for its mode of operation

now in the old s/360 days the FEs had a program that would play music on a nearby radio based on the radiation the circuits made by a specific program

something like that might be feasible
but what the OP had is nonsense

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Here’s what I’ve learned so far: http://www.windowsbbs.com/pc-hardware/109603-physical-prongs-input-out-circuits.html#post640843

by turning GPIO or UART pins on and off, emanates a signal picked up on a AM radio

https://github.com/funtenna/REF_DESIGN

Cui has posted video showing transmitted data from a Pantum laser printer:

https://player.vimeo.com/video/135270882

“wires and components of the device can be turned into a radio transmitter”

“he made a laser printer infected by the malware “sing” for the reporter.”

“ultrasounds that can’t be heard, and radio signals, can be modulated to transmit data out of the printer, and out of the building, to a nearby receiver”

“…we demonstrate implementations of Funtenna as small software implants within several ubiquitous embedded devices, such as VoIP phones and printers, and in common computer peripherals, such as hard disks, console ports, network interface cards…”

“you can send software into machine, transmit data out, and if you want to erase your presence you just delete the software”

http://motherboard.vice.com/read/how…bugging-device

It was their revised definition of “prongs” that had me puzzled.

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