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Could those high pitched sounds you recorded just be capacitor whine or noise on the power supply? All cheap sound interfaces in computers produce noise that c
by nitrogen 9y ago
Could those high pitched sounds you recorded just be capacitor whine or noise on the power supply? All cheap sound interfaces in computers produce noise that correlates with CPU, GPU, or bus activity, and many power supplies make squealing sounds that can be heard in quiet rooms. It's conceivable these could be manipulated as side channels in an already compromised system, but they exist regardless of compromise.
- zdkl 9y agoThat's the beauty of such methods. Anytime an avenue for compromise seems "noisy", I'd be willing to bet someone smart organised and well funded has investigated using it for hi-value penetration.
- tr1ck5t3r 9y agoIts not caps whine which one of my US Mil spec Dell laptops emits along with "static" you can pick up on a FM receiver when scrolling up and down in a web browser or changing the programs being displayed on screen. Being familiar with high end audio I'm aware of amp hiss coming out of speakers when you turn the volume up when its not playing from a source, good amp's emit very little hiss, poor amps emit alot of hiss. These are distinct repetitive tones playing over a loop, the recording I have here will convince anyone its not some random background noise or magnetic flux leaking from the power supply across the amp channels.