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🐙 Nous venons de publier la 8ème version de #PeerTube !

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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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Post suggeriti
  • 0 Votes
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    I think I have identified a fairly significant flaw in how the #Fediverse currently operates. Hear me out.The Fediverse currently consists of all sorts of different systems - #Mastodon, #Friendica , #Pixelfed , #PeerTube, #BookWyrm , and so forth. And while they are all connected via the #ActivityPub protocol, they all have different functionalities and different ways of presenting themselves. Which is as it should be, because Diversity Is Our Strength(TM).However, it is here that the ActivityPub-based interactivity hits its limits - for usually, you can either experience the relevant system as it was intended, or you can interact with it, but not both - _unless_ you have an account on the same system (though not necessarily on the same instance).Let's say that you are a Mastodon user who looks at another person's BookWyrm page. You scroll through their books, posts, and comments. Then you see some comment you want to comment on yourself, but can you do so?Not directly. You need to figure out the URL of their comment, and then copy and paste that comment into the search bar of your Mastodon instance. Then it will show up in the same format as a Mastodon post, and you can interact with it - boost it, like it, comment on it.Sure, it works, but it's a whole lot of tedious effort.Or you can search for the user account in Mastodon and scroll through all their posts and comments as if they were a Mastodon user - and thus, you will miss out on all the unique user interface features of BookWyrm.So what is missing?Well, Mastodon already has an "Open original page" feature when looking at someone's post. What we need is an "Open original page AND AUTHENTICATE" feature. This way, the target instance (whatever software they are using) could acknowledge the viewer as an external user who could nevertheless fully interact with the local user interface, including the ability to boost, like, and make comments.This is something that should be theoretically possible to implement, right? #FediHelp
  • Peertube Updates

    Technical Discussion peertube activitypub
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    It seems Peertube is sending me Update activities every few hours on the hour (or rather, on the 7s or 37s), with no changes. Any idea what this is about? Perhaps view counters updating? Seems a tad noisy. [image: 1762633321437-1000008215.png]
  • 0 Votes
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    ⚠️ Please update your siteWe frequently observe numerous sites across the Fediverse running very outdated versions of Mastodon or Misskey. Some sites are even using versions over a year old.Software updates include not only new features but also critical security fixes. To keep your site secure and stable, ensure you always use the latest version.#Mastodon #Misskey #Fediverse #ActivityPub #PixelFed #PeerTube #Loops #InfoSec #Security #InfoSecurity
  • 0 Votes
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    @stefano you know this is true, and it's why I tagged you :)