• 3 Posts
  • 36 Comments
Joined 3 years ago
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Cake day: July 17th, 2023

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  • On big flash memory you typically have more memory on the chips, than ia presented to the OS. Flash has significantly less write cycles, before the block breaks, so the controller monitors the health and won’t use it anymore when it will soon fail. Instead it uses a block from its unused extra space. (Details might be different, I’m not sure about that). This way the lifetime of the SSD is significantly improved. SD cards do the same, I think.

    So the data in the retired blocks will remain and cannot be overwritten by the OS. If they are encrypted and the keys deleted, that won’t matter



  • Wow, thats one kind of a project. I’m impressed. Though it doesn’t really fit my problem. It has to be something webbased, where everyone of us can use it without an app, without seeing each others information. From the github page it looks like a local tool. And also focused trading similar items. The presents in our secret santa are highly individualized, so randomly trading does not make much sense. And if the interface is too clunky, my non-tech siblings will just reject using it. I want to keep them from deciding for some free privacy nightmare app.

    But I thank you for the suggestion. Its an interesting project


  • Security noob here. Would it be sufficient (in addition to only local authorized access) to directly put the file in an unprivileged container, watching its log output? And of course limiting resource use and execution time of the container (don’t know if common container tools like docker or podman have a way to limit resources out of the box)

    So lets say a simple interface for the file upload behind an authentication service, based on lets say python cgi, ramping up an unprivileged nonroot docker container, killing the container after a fixed time (a few seconds).














  • In germany - I think - blood and plasma donations are most commonly done with the DRK (German Red Cross). I might be wrong, but DRK is not a for profit organization, but “gemeinnützig”. Organizations with that status get controlled by the government for it, so they are non-profit. I think the 25€ are an incentive to come and donate, just as the chocolate and drinks and the small goodies, that you get there. And you only can get the money, if you go to one of the fixed DRK locations. If the DRK comes to somewhere near you (as they often do with churches, town halls, schools and universities) you don’t get any money. I can at least believe, that these two are monetarily similar for the DRK. If you come to them, they don’t need to pay for getting the equipment and people to you. And providing incentives for donating blood is in effect a good thing, as they are working, thus we have more blood to save lifes.

    Ofcourse actors later in the chain are probably profit oriented. Though there I would see the discussion disconnected from the donation. It is more about if we want profit oriented actors in healthcare.

    And - as always - the US healthcare system seems to do the worst thing possible every time. Sorry, americans, don’t want to bash you, but capitalism…


  • An interesting customer base might be small communal organisations. At our local scouts troop I had a discussion with a friend, who is also in IT. His idea (not fleshed out) was to provide small local organizations with a stack of already configured open source software to support the typical needs of such organizations (like a wordpress website, a nextcloud for file storage and common calender, limesurvey for surveys and event registration, mailman3 for mailing lists,…). Depending on the needs you could sell the initial setup process (your personal work in setting up and skill transfer) or ongoing support. Though such organizations normally don’t have much money to give away. So probably its not really worth your time financially (though probably really appreciated in the community).