• 2 Posts
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Joined 1 year ago
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Cake day: July 6th, 2023

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  • employees should refrain from speculation and sarcasm and “think twice” before writing one another about “hot topics.” “Don’t comment before you have all the facts,” they were instructed.

    There is one core aspect of humanity that is missing in the modern world, ephemeral communication. If two people physically meet and talk. That conversation only exists for the length of the breath in their lungs.

    It makes sense for businesses, to establish standard recording practices, including those for ephemeral communication. Think of signal and the auto expiring messages. As long as it’s your standard business practice, that’s okay. If you turned it on when you’re trying to be sketchy, now you’re not following business practice, and that’s wrong…

    This is the same reason lots of companies will have email auto delete after 3 months if not archived manually.

    None of this has to be inherently evil, any lawsuit will include discovery, which means every little textual conversation in the company chat will be examined and published to slander the company. Even if the company did nothing wrong. There will be some a****** in chat who says some s*** that looks bad as a headline. And that’s exactly how it will be used




  • I wish it were that easy, there’s a lot of shared architecture in CPU design. So maybe there’s cache lines that are shared, those have to be disabled.

    Architecturally, maybe memory tagging for cash lines that in addition to looking at the TLB and physical addresses also looks at memory spaces. So if you’re addressing something that’s in the cache Even for another complete processor, you have to take the full hit going out to main memory.

    But even then it’s not perfect, because if you’re invalidating the cache of another core there is going to be some memory penalty, probably infotesimal compared to going to main memory, but it might be measurable. I’m almost certain it would be measurable. So still a side channel attack

    One mitigation that does come to mind, is running each program in a virtual machine, that way it’s guaranteed to have completely different physical address space. This is really heavy-handed, and I have seen some papers about the side channel attacks getting leaked information from co guest VMs in AWS. But it certainly reduces the risk surface







  • They have a freezer INSIDE their heated house, I know it’s convenient, but the engineer in me gets annoyed when I see that.

    maybe we as a society could standardize fridge sizes so we could build fridges that open on the inside but radiate on the outside

    Same for heat sources being inside a AC house (oven, fridge, etc) outdoor kitchens make so much sense, or even garage fridges

    im sad she hasn’t posted a new video in a year.