Mauve 👁💜 @mauve@mastodon.mauve.moe

Lamphone is a clever, optical, side-channel attack that can turn a simple lightbulb into a makeshift microphone. It works because the filament inside a lightbulb subtly vibrates in response to sound waves, like someone talking. These tiny vibrations change the amount of light the bulb emits. By pointing a light sensor or photodiode at the bulb from a distance, a lamphone attack can detect these variations in brightness and convert them back into audio signals, effectively “listening in” on conversations without touching the microphone or the room.

It’s a striking example of how everyday objects can be exploited for surveillance, showing that even something as mundane as a lamp can leak information if you know what to look for.

#OpticalPhreaking #SideChannelAttack #CyberSecurity #Privacy #InformationLeak

When someone comments "this is just like xkcd N", I don't look up the number or consult my memory. I just imagine the most appropriate xkcd comic for the situation and assume I'm right.

Did you know your MacBook has a sensor that knows the exact angle of the screen hinge?

It’s not exposed as a public API, but I figured out a way to read it and make it sound like an old wooden door.

Source code and a downloadable app to try it yourself: https://github.com/samhenrigold/LidAngleSensor

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