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Posted by hapax_legomena 8 hours ago

Leaking Secrets from Air-Gap Computers by Spelling Radio Signals from RAM (2024)(arxiv.org)
78 points | 36 commentspage 2
laserbeam 4 hours ago|
> We show that malware on a compromised computer

Right… I’m going to stop reading after these words. With malware on the computer you can change the heat signature of the room of you’re bored enough. https://xkcd.com/1172/

superkuh 5 hours ago||
Computers used to come in proper full metal cases. Now they don't. Even when you try to find a metal case for a personal build most cases have giant holes in the side (case windows) acting as slot antennas. And plastic case laptop designs are even worse. Radiated emissions are much easier to achieve at useful intensities these days because of it. Sure, before the conductors going in and out radiated somewhat effectively (and still do). But now even core system components inside are just being let emit without any mitigation.
WalterBright 3 hours ago|
I have my computer in a metal box because it has caught fire twice.
ytxm 3 hours ago||
Ignoring the obvious "dmd is truly blazing fast" quip, wildly curious how this happened to you twice? Was it the PSU? Only once heard of a house fire caused by a computer, but no information on component actually caused it.
WalterBright 3 hours ago||
The first time it was the graphics card. It burst into flames and smoke poured out. The fire went out when I yanked the power. Fortunately, I was sitting next to it when it went. To be fair, it was doing a long graphics job.

After that, I set the computer on a metal plate to keep a fire from spreading to the floor.

Some years later, the PSU went out with a bang and a lot of smoke.

(dmd is so fast, the computer doesn't have time to heat up!)

carplaybits 7 hours ago||
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