3 ms·
At which point they'd find out how to manipulate specific capacitors on the board to emit noise. Did you ever hold a cheap backlit wristwatch up to your ear as
by steventhedev 10y ago
At which point they'd find out how to manipulate specific capacitors on the board to emit noise. Did you ever hold a cheap backlit wristwatch up to your ear as a kid? That sound.
Perhaps a cheaper way to solve this is to hide the physical case inside a locked cabinet, with a ventilation fan? Most users of secure systems don't need physical access to the case, and the ventilator should drown out any signal noise from such malware.
- tinbucket 10y agoFair point. I suppose it's about eliminating as many vulnerabilities and exploit vectors as possible, then deploying countermeasures and controls to mitigate the ones you can't remove. Putting a fanless machine inside a closed cabinet with a relatively noisy fan, or at least one with a large frequency spread, would go some way towards accomplishing that.
- caf 10y agoThe "adding noise" method is not, in general, effective. You can always do something like spread-spectrum modulation of the transmitted signal to recover it from below the noise floor.