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Social Forum federato con il resto del mondo. Non contano le istanze, contano le persone

Trying out the fediverse for the first time today.

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Gli ultimi otto messaggi ricevuti dalla Federazione
  • Quizzino della domenica: Strana equazione

    784 - algebra
    La sonda marziana Curiosity ha trovato delle scritte dell'antica civiltà marziana. Una di esse, una volta decifrata, è la seguente: 5x² − 50x + 125 = 0: x = 5 e x = 8. In effetti 5 è una soluzione dell'equazione, ma 8 non lo è: 5×64 − 50× + 125 = 45. Quante dita avevano i marziani?

    (trovate un aiutino sul mio sito, alla pagina https://xmau.com/quizzini/p784.html; la risposta verrà postata lì il prossimo me https://wp.me/p6hcSh-91s

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  • What a hole.

    Kiev 60
    Zodiak-8 30mm F3.5
    Lomography Metropolis

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  • Even when there’s no accountability, the record matters. Credit to the Wikipedia editors maintaining this page.

    https://en.wikipedia.org/wiki/Deaths,_detentions_and_deportations_of_American_citizens_in_the_second_Trump_administration

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  • Tamper Detection with Time-Domain Reflectometry

    For certain high-security devices, such as card readers, ATMs, and hardware security modules, normal physical security isn’t enough – they need to wipe out their sensitive data if someone starts drilling through the case. Such devices, therefore, often integrate circuit meshes into their cases and regularly monitor them for changes that could indicate damage. To improve the sensitivity and accuracy of such countermeasures, [Jan Sebastian Götte] and [Björn Scheuermann] recently designed a time-domain reflectometer to monitor meshes (pre-print paper).

    Many meshes are made from flexible circuit boards with winding traces built into the case, so cutting or drilling into the case breaks a trace. The problem is that most common ways to detect broken traces, such as by resistance or capacitance measurements, aren’t easy to implement with both high sensitivity and low error rates. Instead, this system uses time-domain reflectometry: it sends a sharp pulse into the mesh, then times the returning echoes to create a mesh fingerprint. When the circuit is damaged, it creates an additional echo, which is detected by classifier software. If enough subsequent measurements find a significant fingerprint change, it triggers a data wipe.

    The most novel aspect of this design is its affordability. An STM32G4-series microcontroller manages the timing, pulse generation, and measurement, thanks to its two fast ADCs and a high-resolution timer with sub-200 picosecond resolution. For a pulse-shaping amplifier, [Jan] and [Björn] used the high-speed amplifiers in an HDMI redriver chip, which would normally compensate for cable and connector losses. Despite its inexpensive design, the circuit was sensitive enough to detect when oscilloscope probes contacted the trace, pick up temperature changes, and even discern the tiny variations between different copies of the same mesh.

    It’s not absolutely impossible for an attacker to bypass this system, nor was it intended to be, but overcoming it would take a great deal of skill and some custom equipment, such as a non-conductive drill bit. If you’re interested in seeing such a system in the real world, check out this teardown of a payment terminal. One of the same authors also previously wrote a KiCad plugin to generate anti-tamper meshes.

    Thanks to [mark999] for the tip!

    hackaday.com/2026/01/24/tamper…

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  • Feditarian Fediversalist

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  • @DavidBHimself I guess we will have to agree to disagree on this one.

    And yes, I did lose my right to vote when I moved a couple of times, even as a resident+citizen of said location. That’s how our imperfect electoral system works. 😥

    @evan

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  • @EdwinG Well, you're not in most cases.

    @evan

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  • @evan I agree with @EricLawton -- "expatriate" is an imperial term. I see no confusion of terminology in his comment, quite the opposite.

    In the context of the poll, "expatriate" was used about emigrants, not immigrants, but the point stands. The clearest term, if a bit long and pedantic, might have been "citizens who are not residents".

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  • Hello

    Uncategorized introduction
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    Hello!This is my second account (main one is @haruka ) since I'm using Phanpy and can follow more than one timeline where I have accounts.I'm desperately trying to find people to interact with that are the exceptions to the "mastodon users" category. I liked the templates we used on forums, so I'll put it like we used to because it's easier for me than writing everything out I like: All the usual "30 years old millennial" stuff:showsanime (+west animation)webcomicsmoviesart (academy degree here)sport (I'm a football player!)++++ I'm all around a nerd and a fanatic of:She-Ra (see pic)The Owl House (love it)Legend of KorraThe guy she was interested in wasn't a guy at allsome other WLW stuff I forgot to mention hereKingdom Hearts (the older games, missing the newer ones)cyberpunk I dislike:sexualized animalsexcessive fanatismLinuxai-stufftalking about politics (I'm already well informed, thanks)"reply guys"horror (creepy is ok, eerie is fantastic, horror meh)meat (veg here)stereotypes#introduction
  • Hello world!

    Uncategorized introduction art fediart ffxiv krita
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    @jasmintSo... welcome (back)!
  • New #Introduction:

    Uncategorized introduction
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    New #Introduction: Hi, my name is [see user name] and i'm a faver. That means i fav a lot. Just to make things clear: if i fav most of your posts, it doesn't mean i have a crush on you or something. It's just means that i have a fav compulsion and i like your posts. Now, if I boost your post, that might mean something, like for example, that i want other people to see your post. Just wanted to clarify this. Have a fav tuesday ❤️PS i am really into cats
  • 0 Votes
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    Hello #Fediverse and Happy New Year!I'd like to mark the start of 2025 with the first message from my self-hosted instance. You may already know me as @_elena@mastodon.social. Well, now I also run my own #ActivityPub microblogging server, thanks to the magic of #YunoHost and #GoToSocial (and #Phanpy, which I'm using to compose this).I registered this domain – aseachange.com – a looooong time ago but never did anything with it. It was the very first domain name I ever bought, even before securing elenarossini.com (!!!). It was so long ago, but I remember I was inspired by Beck's album Sea Change. seachange[dot]com was taken, so I grabbed Aseachange.I absolutely love its meaning of profound transformation and I think it's PERFECT for my self-hosted #Fediverse instance and what it represents: independence, empowerment and digital sovereignty.Ever since setting it up, I've been feeling joyful and hopeful. Everytime I look at myself in the mirror, I think: I'm in control of my own social media platform. And it feels SOOO GOOD.What do I have in store for 2025? I plan to use this account to post messages about #selfhosting, learning #Linux, privacy and digital sovereignty.I will also keep posting from my Mastodon account because you don't give a Lamborghini to someone who just passed their driver's license. I barely know what I'm doing here, so I feel a lot safer (for now) keeping my mastodon.social account as well... In case anything goes wrong here. Better safe than sorry!So, this is my #Introduction and if you've read as far as here I just want to thank the Fediverse for being so amazing and allowing me to connect with people on my own terms. And thank you Fedi people for being so generous and supportive with your superb advice and kind words.This is a really magical, special place.Happy New Year, everyone!