U.S. researchers show computers can be hijacked
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.
The new makeshift transmitting antenna, dubbed “Funtenna” by lead researcher Ang Cui of Red Balloon Security, adds another potential channel that likewise be would be hard to detect because no traffic logs would catch data leaving the premises.
Cui showed the system in action for a few reporters ahead of his talk Wednesday at the annual security conference Black Hat in Las Vegas. He said he would release “proof-of-concept” code after the talk, allowing other researchers and potentially malicious hackers to build on his work.