Comment on Mullvad's public encrypted DNS Servers run in RAM now

• nevemsenki@lemmy.world ⁨1⁩ ⁨year⁩ ago

  If they get hacked, your data is still there until a reboot, though. This is more useful against state authorities taking servers than hackers.

  source

  • bamboo@lemm.ee ⁨1⁩ ⁨year⁩ ago

    That’s not how ram works, at least not generally. Unless frozen to an extremely cold temperature, ram loses its value very quickly and needs constant power to retain data. If a server were to lose power at normal operating temperatures, there would be nothing significant left to recover within a few seconds.

    source

    • Traister101@lemmy.today ⁨1⁩ ⁨year⁩ ago

      They mean somebody gains access to the server/s thereby they could look at the ram while it’s still actively running.

      source

      • nevemsenki@lemmy.world ⁨1⁩ ⁨year⁩ ago

        Yeah, as long as the OS is running, it doesn’t matter if its from a ramdisk or SSD/HDD.

        source
    • barsoap@lemm.ee ⁨1⁩ ⁨year⁩ ago

      It’s nothing that can’t be overcome with forensic equipment, though. With the right set of tools you can even take the sticks out of the server while it’s still running and retain the data, that’s why RAM encryption is a thing. For the really paranoid, homomorphic encryption.

      source

      • registrert@lemmy.sambands.net ⁨1⁩ ⁨year⁩ ago

        I encrypt my thoughts in case I talk in my sleep.

        source

        • -> View More Comments
• ElectroNeutrino@lemmy.world ⁨1⁩ ⁨year⁩ ago

  Harder, yes, but still good to note not impossible. There’s some cryogenic techniques that allow them to preserve what’s on the RAM long enough to read it.

  source

  • symbioticremnant@lemmy.world ⁨1⁩ ⁨year⁩ ago

    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

    source

    • ElectroNeutrino@lemmy.world ⁨1⁩ ⁨year⁩ 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 until the data degrades and can then do whatever you want with it. I believe you can extend it up to a week.

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

      source