5 ms·

Yup, power differential analysis are well-known enough to make their way into Wikipedia: https://en.wikipedia.org/wiki/Power_analysis#Power_analysis_and_algorit

by Kalium 5y ago

Yup, power differential analysis are well-known enough to make their way into Wikipedia: https://en.wikipedia.org/wiki/Power_analysis#Power_analysis_and_algorithmic_security https://en.wikipedia.org/wiki/Power_analysis#Power_analysis_...

mmastrac 5y ago
I recall high-speed light capture being used to exfiltrate data from router activity lights in the past. EDIT: link here: https://threatpost.com/blinking-router-leds-leak-data-from-air-gapped-networks/126199/ https://threatpost.com/blinking-router-leds-leak-data-from-a...
- Scoundreller 5y ago
  That’s an easy one. There’s nothing different between blinking that status LED and sending a transmission over fibre and wiretapping that.
- IIsi50MHz 5y ago
  Or highspeed cameras being used to discern the minute colour and luminance changes on a window or a material in the target room which occur due to vibrations in the glass or many other materials due to sound in the target room. This allows reproducing sound that occurs in the room without having access to any microphones. Or using appropiate lenses to "look through" blinds or other materials that have tiny lensing gaps which the typical person regards as not see-through.
  - toiletaccount 5y ago
    Or hack their router to figure out their physical location. Water+microwaves etc. Or van eck phreaking. Or sell them tattletale electronics, like ethernet or usb cables. Or rubber hose em. Or ask scroogle/fecebook.
    - deleted 5y ago
      [deleted]
  - bb88 5y ago
    Bouncing a laser off a window has been around since AFAICT the 80's. Maybe 70's. And it didn't need a high speed camera. It's also relatively easy to defend against as well.
- partymonious 5y ago
  Mildy related: https://en.wikipedia.org/wiki/Electrical_network_frequency_analysis https://en.wikipedia.org/wiki/Electrical_network_frequency_a... Not limited to audio forensics as the article mentions.

by Kalium 5y ago

mmastrac 5y ago

I recall high-speed light capture being used to exfiltrate data from router activity lights in the past. EDIT: link here: https://threatpost.com/blinking-router-leds-leak-data-from-air-gapped-networks/126199/ https://threatpost.com/blinking-router-leds-leak-data-from-a...

Scoundreller 5y ago
That’s an easy one. There’s nothing different between blinking that status LED and sending a transmission over fibre and wiretapping that.
IIsi50MHz 5y ago
Or highspeed cameras being used to discern the minute colour and luminance changes on a window or a material in the target room which occur due to vibrations in the glass or many other materials due to sound in the target room. This allows reproducing sound that occurs in the room without having access to any microphones. Or using appropiate lenses to "look through" blinds or other materials that have tiny lensing gaps which the typical person regards as not see-through.
- toiletaccount 5y ago
  Or hack their router to figure out their physical location. Water+microwaves etc. Or van eck phreaking. Or sell them tattletale electronics, like ethernet or usb cables. Or rubber hose em. Or ask scroogle/fecebook.
  - deleted 5y ago
    [deleted]
- bb88 5y ago
  Bouncing a laser off a window has been around since AFAICT the 80's. Maybe 70's. And it didn't need a high speed camera. It's also relatively easy to defend against as well.
partymonious 5y ago
Mildy related: https://en.wikipedia.org/wiki/Electrical_network_frequency_analysis https://en.wikipedia.org/wiki/Electrical_network_frequency_a... Not limited to audio forensics as the article mentions.