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Joined 2 years ago
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Cake day: June 6th, 2023

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  • Hab ich mir auch mal gedacht, und habs bereut.

    Ich vermute bei einer solchen Frage lebst du in einer Stadt, und nicht iwo auf dem Land mit Haus und Hof. Suche mal nach Rad-Waschboxen/-Waschanlagen in deiner Umgebung, so Zeug gibt’s. Es gibt sogar Tankstellen die in den Waschboxen für Autos ausklappbare Fahrradständer haben. Und zur Not würd ich es einfach in ner Auto-Waschbox auf den Boden legen und fertig.



  • As far as I understand, in this case opaque binary test data was gradually added to the repository. Also the built binaries did not correspond 1:1 with the code in the repo due to some buildchain reasons. Stuff like this makes it difficult to spot deliberately placed bugs or backdors.

    I think some measures can be:

    • establish reproducible builds in CI/CD pipelines
    • ban opaque data from the repository. I read some people expressing justification for this test-data being opaque, but that is nonsense. There’s no reason why you couldn’t compress+decompress a lengthy creative commons text, or for binary data encrypt that text with a public password, or use a sequence from a pseudo random number generator with a known seed, or a past compiled binary of this very software, or … or … or …
    • establish technologies that make it hard to place integer overflows or deliberately miss array ends. That would make it a lot harder to plant a misbehavement in the code without it being so obvious that others note easily. Rust, Linters, Valgrind etc. would be useful things for that.

    So I think from a technical perspective there are ways to at least give attackers a hard time when trying to place covert backdoors. The larger problem is likely who does the work, because scalability is just such a hard problem with open source. Ultimately I think we need to come together globally and bear this work with many shoulders. For example the “prossimo” project by the Internet Security Research Group (the organisation behind Let’s Encrypt) is working on bringing memory safety to critical projects: https://www.memorysafety.org/ I also sincerely hope the german Sovereign Tech Fund ( https://www.sovereigntechfund.de/ ) takes this incident as a new angle to the outstanding work they’re doing. And ultimately, we need many more such organisations and initiatives from both private companies as well as the public sector to protect the technology that runs our societies together.


  • Well you must have either set up a port redirect (ipv4) or opened the port for external traffic (ipv6) yourself. It is not reachable by default as home routers put a NAT between the internet and your devices, or in the case of ipv6 they block any requests. So (unless you have a very exotic and unsafe router) just uhhh don’t 😅 To serve websites it is enough to open 443 for https, and possibly 80 for http if you want to serve an automatic redirect to https.


  • A colleague of mine had a (non externally reachable) raspberry pi with default credentials being hijacked for a botnet by a infected windows computer in the home network. I guess you’ll always have people come over with their devices you do not know the security condition of. So I’ve started to consider the home network insecure too, and one of the things I want to set up is an internal ssh honeypot with notifications, so that I get informed about devices trying to hijack others. So for this purpose that tool seems a possibilty, hopefully it is possible to set up some monitoring and notification via uptime kuma.







  • True words. The sustained effort to keep something in decent shape over years is not to be underestimated. Now when life changes and one is not able or willing anymore to invest that amount of time, ill-timed issues can become quite the burden. At one point I decided to cut down on that by doing a better founded setup, that does backup with easy rollback automatically, and updates semi-automatically. I rely on my server(s), and all from having this idea to having it decently implemented took me a number of months. Just because time for such activities is limited, and getting a complex and intertwined system like this reliably and fault tolerant automated and monitored is simply something else than spinning up a one off service


  • And they believe all employees actually remember so many wildly different and long passwords, and change them regularly to wildly different ones? All this leads to is a single password that barely makes it over the minimum requirements, and a suffix for the stage (like 1 for boot, 2 for bitlocker etc), and then another suffix for the month they changed it. All of that then on sticky notes on the screen.



  • Ausprobieren würde ich dir auch vorschlagen! Grundsätzlich passt das schon relativ gut zuammen. Nachdem beim E-Bike bei ~25km/h schluss ist, liegt der Schnitt natürlich da drunter. Aber zumindest für mein Gefühl ist es immer noch schnell genug damit es nicht langweilig wird, und Bergauf kommt man dann mit dem Rennrad schonmal ins Hintertreffen wenn man nicht am Akku spart. Ich habe mit meiner Partnerin ne ähnliche Konstellation, nur dass das E-Bike ein (sportlicheres) Lastenrad mit unserem Kind drin ist. Die Länge der Touren fällt dadurch natürlich kürzer aus, weil kein kleines Kind stundenlang ohne Pause da drin sitzen will. Aber auch ohne Kind und auf einem normalen E-Bike wird das für deine angepeilten Längen und Höhenmeter mit einem Akku nicht reichen. Man kann sich aber einfach nen zweiten Akku Besorgen, in eine Fahrradtasche werfen und unterwegs tauschen. Am wichtigsten ist aber dass deine Freundin auch Lust auf so Lange Touren haben muss. Sonst macht man halt kleinere, und möglicherweise will sie irgendwann selber weiter fahren :)




  • skilltheamps@feddit.detoSelfhosted@lemmy.worldSelf Hosting Fail
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    1 year ago

    Those are symptoms of sitting at that operation point permanently, and they are a of course a concern. What I’m after is that people think that energy gets put in to the battery, i.e. it gets charged, as long as a “charger” is connected to the device (hence terms like “overcharged”). But that is not true, because what is commonly referred to as “charger” is no charger. It is just a power supply and has literally zero say in if, how and when the battery gets charged. It only gets charged if the charge controller in the device decides to do that now, and if the protection circuit allows it. And that is designed to only happen if the battery is not full. When it is full, nothing more happens, no currents flow in+out of the battery anymore. There’s no damage due to being charged all the time, because no device keeps on pumping energy into the cell if it is full.

    There is however damage from sitting (!) at 100% charge with medium to high heat. That happens indipendently from a power supply being connected to the device or not. You can just as well damage your cells by charging them to 100% and storing them in a warm place while topping them of once in a while. This is why you want to have them at lower room temperature and at ~60%, no matter if a device/“charger” is connected or not.

    (Of course keeping a battery at 60% all the time defeats the purpose of the battery. So just try to keep it cool, charged to >20% and <80% most of the time, and you’re fine)