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Mullvad's public encrypted DNS Servers run in RAM now (ghacks.net)

submitted 11 months ago by throws_lemy@lemmy.nz to c/technology@lemmy.world

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[–] symbioticremnant@lemmy.world 4 points 11 months ago (1 children)

It's a bit of a long shot, and I'm not sure if it's just theory or proven in reality. The idea is that you literally freeze the memory at a cold enough temperature to freeze the state of the memory, and then swap the memory into a machine with power in order to read or dump the data

[–] ElectroNeutrino@lemmy.world 3 points 11 months ago* (last edited 11 months ago)

It's a variation of a cold boot attack. Instead of forcing an OS crash and rebooting into an OS connected to a portable drive, you cool the memory to extend the time you have before the data degrades and can then do whatever you want with it. I believe you can extend it up to a week.

https://citp.princeton.edu/our-work/memory/