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gsuberland

@gsuberland@chaos.social

he/him

Into electronics, windows internals, cryptography, security, high speed networking, compute hardware, physics, colourimetry, lasers, stage lighting, D&B, DJing, demoscene, socialism.

Heavily ADHD.

Laser team @ EMF Camp, lasers & lighting orga @ NOVA Demoparty.

I sell parody warning stickers at Unsafe Warnings: https://unsafewarnings.etsy.com/

For a day job I hack stuff, I guess. Embedded tech, ICS/SCADA, marine stuff, x86 platforms, etc.

All posts encrypted with ROT256-ECB.

This profile is from a federated server and may be incomplete. For a complete list of posts, browse on the original instance.

gsuberland , to random
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I had a blast DJ'ing at on Sunday night. Went very well considering it was my first time doing it in person instead of on the internet.

@jtruk caught this absolutely incredible slow motion footage during it, which might be my favourite EMF shot of all time. Charles, Rob, and Dimitri really nailed the effect timings. phenomenal.

Me standing in the middle of a shipping container full of lights, lifting one arm into the air as lasers fly and flamethrowers blast from the top of the crate.

gsuberland , to random
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I am home from EMF. My feet are bruised and blistered, my ankle is still bleeding, I twisted my knee, my hips hurt, I'm sunburned, my lip is split, my hands are covered in bruises and scratches, and it was 100% worth it.

gsuberland , to random
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gsuberland , to random
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gsuberland , to random
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another EMF, another moth friend!

#mothstodon #emf2024

RikerGoogling Bot , to random
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how does edward scissorhands use the bathroom

gsuberland ,
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@RikerGoogling dong thimble

gsuberland , to random
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SD cards are the literal worst.

they've expanded to be the size of small hard drives, and devices like the rpi keep using them as boot media, but they:

  • use garbage tier low endurance flash cells internally
  • have little to no overprovisioning for wear
  • perform only the most basic wear levelling
  • have no protocol level integrity checking
  • have few internal error correction features, if any
  • decay comparatively quickly without patrol scrubs
  • do not perform patrol scrubs
  • cannot do PLP
gsuberland , to random
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congratulations duolingo, you're the first service I stopped paying for explicitly because of ML / LLM integration. take a bow (and fall face-first into a pile of shit)

gsuberland , to random
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what do you say when your code performs badly?

O(no)

gsuberland , to random
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helpful

gsuberland , to random
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honestly so glad I pivoted my career to focusing on industrial control and embedded systems security, rather than sticking with average office stuff, because stuff like "Slack trains LLMs on your company messages with no isolation between roles" and "MS Recall makes infostealers trivial and ruins all ability to isolate an access timeline" is enough that I'd just be throwing my hands up and saying fuck it, I give up. I salute those who have the energy to fight the tide.

gsuberland , to random
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Microsoft Recall is going to make post-breach impact analysis impossible. Right now IR processes can establish a timeline of data stewardship to identify what information may have been available to an attacker based on the level of access they obtained. It's not trivial work, but IR folks can do it. Once a system with Recall is compromised, all data that has touched that system is potentially compromised too, and the ML indirection makes it near impossible to confidently identify a blast radius.

gsuberland OP ,
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Others have already talked about the safety impacts of this in shared-tenant contexts (e.g. a family computer) and just how lucrative Recall is going to be for infostealer malware, with far better insights than I could provide, so I won't repeat the talking points here. Suffice to say that Recall is a serious force multiplier in any context where a keylogger would be useful to a malicious actor, because it provides native retroactive activity logging.

gsuberland OP ,
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This is also functionally indistinct from various proposed device scanning capabilities which privacy activists have been fighting for decades. Even if the activity aggregation mechanism itself is implemented via local training, the Microsoft Account features are deeply ingrained into the OS and there's no real barrier to that information being transmitted off-device. I find it hard to believe that state security apparatuses won't pressure Microsoft into making that information available.

gsuberland OP ,
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In the context of illegal materials, we then have to contend with the possibility of life-ruining state action being taken against individuals based on a lossy generalisation of captured information produced by an opaque system whose obfuscation of the evidentiary chain of custody will, in all likelihood, be ignored by departments whose success is measured in conviction rate rather than justice.

gsuberland OP ,
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TL;DR it's a fucking shit show from all directions

gsuberland , to random
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I hope this email finds you living in a shotgun shack
I hope this email finds you in another part of the world
I hope this email finds you behind the wheel of a large automobile
I hope this email finds you in a beautiful house, with a beautiful wife

RikerGoogling Bot , to random
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is fire one syllable or two

gsuberland ,
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@RikerGoogling one point five, just like the stardate

gsuberland , to random
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normalise telling people that they steam a good ham

gsuberland , to random
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you ever do that thing where there's some property or behaviour you're generally aware of but generally just ignore as not being particularly consequential, and then you design something where that property is a limiting factor, so you study it in a lot of detail and then become cursed with the knowledge that you really should be accounting for it pretty much everywhere

RikerGoogling Bot , to random
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which millennium are millennials from

gsuberland ,
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@RikerGoogling the one with robbie williams

hastingsmothman , to random
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gsuberland ,
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@loren @hastingsmothman rosy maple carries my top spot but hawk moths are super cool looking

gsuberland , to random
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I was recently on the phone with a financial org and they asked me what my expected retirement age was and I laughed, and the guy was like "yeah I get that response to that question a lot these days".

gsuberland , to random
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well, I wondered how many Starlink satellites would fall out of orbit after the solar storm, and we have an answer: somewhere between 7 and 13

https://chaos.social/@gsuberland/112419858515395976

gsuberland , to random
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I need to start applying this philosophy to more things

ALT
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  • gsuberland , to random
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    successful applicant will have at least 600 years of experience working with C++23

    (this is actually possible because every hour of writing C++ feels like 600 years)

    gsuberland , to random
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    interesting thing of note: if you're looking to buy a GaN USB-C charger above 75W, compare the price-per-watt to a few 65W ones.

    chargers above 75W are required to have an active PFC stage, typically requiring four more transistors and a fancier controller, which adds cost, so you can often tell if they're penny-pinching on the design if the price-per-watt is close to that of a 65W one. you should expect to see at least a 20% price-per-watt jump if they're doing it right.

    gsuberland , to random
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    lol at negative reviews on GaN USB chargers complaining that they feel cheap because they're light

    gsuberland OP ,
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    "this charger where whole point of the tech is that it's small and light is super small and light! terrible!"

    gsuberland , to random
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    TIL that mustard plants grow very tall and have purple flowers that bees really like. I planted them because they're a great "grow literally anywhere" plant you can just yeet into the ground and leave to do their thing, and they're great at weed suppression and outcompeting grasses, but I didn't know they'd end up looking nice and making the bees happy too.

    ... now I'm in the mood to do some guerilla gardening.

    gsuberland , to random
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    watching Nemo refuse to take Ireland's gifted crown off despite it really not fitting them was a real highlight #eurovision

    gsuberland , to random
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    I'm looking forward to all the super nerdy incident reports from grid operators explaining how they responded to incidents caused by the geomagnetic storm :D

    gsuberland , to random
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    my favourite detail about today is that a geomagnetic storm of this magnitude induces currents exceeding 200A through metal pipelines. hope those earth stakes are beefy enough!

    gsuberland , to random
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    GOES satellite proton flux measurement peaked at 207 particles per square centimeter per second per steradian (I should put that one on @weirdunits) at the 10MeV energy level, at around 17:40 UTC.

    gsuberland OP ,
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    GOES satellites' magnetometers are showing variances in excess of ±0.2μT, which is a peak-to-peak shift of about 0.85% of earth's nominal magnetic flux density.

    gsuberland , to random
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    just had a webpage try to display a video ad, but for some baffling reason they DRM'd the ad so my browser asked if I wanted to allow playback of DRM'd content and I just said no. amazing design, no notes.

    gsuberland , to random
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    "I want a carton of milk"

    "milk is available via joining the local dairy farmers realtime chat group."

    this is clearly batshit, of course. nobody would ever ask you to do that. it's a ludicrous scenario. utter lunacy. oh btw files are on the discord.

    gsuberland , to random
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    I just saw an article where someone described their product as having "the ease of configuration and setup as Docker" and I can only assume they are referring to a different piece of software that also happens to be called docker

    gsuberland , to random
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    StackExchange Inc's deal with OpenAI is extremely frustrating, and users are being left without much recourse.

    the story is already hitting the tech press, but much of it is missing important details and context about how StackExchange sites are run, not to mention the history of organised protest against SEI's pro-LLM stance.

    I wrote a bunch about it here, in case anyone is interested in learning more about the situation and its impact:

    https://chaos.social/@gsuberland/112401284014892261

    molly0xfff , to random
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    "[The moderator crackdown is] just a reminder that anything you post on any of these platforms can and will be used for profit. It's just a matter of time until all your messages on Discord, Twitter etc. are scraped, fed into a model and sold back to you." – @ben

    https://www.tomshardware.com/tech-industry/artificial-intelligence/stack-overflow-bans-users-en-masse-for-rebelling-against-openai-partnership-users-banned-for-deleting-answers-to-prevent-them-being-used-to-train-chatgpt

    h/t @dangillmor

    gsuberland ,
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    @molly0xfff @ben @dangillmor Admin (SEI employee), not moderator (volunteer community member), but yes.

    gsuberland , to random
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    [serious, no joke replies or guesses / autotranslation please]

    do I know anyone native or otherwise very fluent in Chinese who can tell me the correct term for a plated edge connector, like you might find on a PCIe card? specifically the "gold fingers" style connector feature you would find on the PCB side, not the plastic connector it slots into.

    I've had an absolute nightmare trying to communicate this feature to a Shenzhen-based PCB vendor and I would like it to be easier in future.

    gsuberland , to random
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    I propose a new law of computing: any IRC channel that includes a matrix bridge will tend towards all conversation becoming about the matrix bridge being broken

    gsuberland , to random
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    did you know that the default Windows 10 desktop background is a photo, not a digital effect?

    it's a Kvant Spectrum laser projector with Saturn 9000 scanners beaming light into a sheet of transparent acrylic with black cardboard masks.

    there's even a short video showing an animated show variant of it here: https://www.precisionlasers.com/projects/windows10

    gsuberland , to random
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    they call it prompt engineering because "I'm really good at coming up with pinterest search terms to copy/paste art from" doesn't have the same ring to it.

    lori , to random
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    I saw some posts going "but CD-Rs will wear down your 3DO disc drive!"

    Folks I'm sorry but it's 2024. Your 3DO, if it still works, is on borrowed time and has been for a very very long time now. Unless you're a museum then just play your CD-Rs and enjoy your 3DO while you can. They're going to stop working sooner rather than later and you might as well have fun while they work. At least there's starting to be some mod options for other storage now.

    Your old consoles exist to be played and at this point not playing CD-Rs isn't going to be the difference between your 3DO working for another year or another 15 years. Don't worry about it. Play some fucking video games.

    gsuberland ,
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    @lori someone on here the other day was talking about their experience working as someone who helps families organise and sell a person's belongings after they die, and couldn't count the number of times when someone had bought some fancy thing (often homeware like fancy crystal wine glasses or fine china) and literally never used it because it was bought "for special occasions". they never enjoyed the nice things they had, they just collected dust. kinda tragic.

    gsuberland ,
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    @lori someone else replied to that thread with a post they'd seen of someone saying "I'm going to use [the fancy things] every day because there is no more special occasion than being alive", which I really liked.

    gsuberland ,
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    @claudius @lori that's the one

    gsuberland , to random
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    I wish more people knew that light curtain sensors are cheaply available and easy to integrate into an e-stop for automated machinery. you can protect a 3.0m by 0.5m region against ingress for under 70€.

    if you're building hobbyist CNC stuff (milling, XY tables, robot arms, etc.) without a full-coverage interlocked enclosure they're a very affordable way to save you from serious injury.

    gsuberland OP ,
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    @djm search AliExpress for "light curtain sensor". thousands of options to pick from.

    under the hood it's literally just a bunch of IR laser diodes on one side and a series of phototransistors in a parallel open-collector configuration on the other side, so there's not a lot to go wrong and buying unbranded is generally fine outside of a commercial context.

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