• 2 Posts
  • 217 Comments
Joined 2 years ago
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Cake day: June 11th, 2023

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  • It’s on a VPS. Whether that’s really self-hosted may depend on how much of a purist you are, but it’s fully self-managed, not SAAS.

    It’s recommended to have a PTR record mapping your IP address to your domain, which you wouldn’t be able to do with a residential connection from a typical ISP. I do send mail from multiple domains though and I haven’t had issues with deliverability. What I do not send is any kind of high-volume mail, which would likely attract a different kind of scrutiny.



  • Sort of. This is apparently done on-protocol so anyone can issue verifications, but they’re only shown in the official client if they’re from BlueSky or someone approved by BlueSky.

    A better way to do this would be to let users subscribe to verifiers the way they can labelers. Better still would be for the label to indicate what the verifier has verified about the account, like “nytimes.com says this person is an employee of the New York Times”, which is something labelers can already do.

    So I really think they should have just leaned into labelers.





  • Terms like “safe” and “private” are not binary.

    Are the contents of your Signal conversations on an iPhone private with regard to mass surveillance conducted by governments and ISPs? Probably. Apple uses security and privacy as marketing points, and there are a whole lot of people looking for vulnerabilities in its products who are incentivized to disclose them (possibly with a delay for patches). Signal itself takes steps to prevent data leaks to less secure parts of the OS and other apps.

    Would your conversations remain private in the face of a targeted attack against your device by a nation state willing to spend a significant amount of time and money when you’re using Signal on an iPhone that’s presumably used for purposes other than secure conversations with a small set of people you know? Almost certainly not.




  • That’s one I used to hold until I went looking for studies on how smaller doses of alcohol impact a person’s driving ability. What I found was a linear, dose-dependent response with no real hard cutoffs. Driving is dangerous enough; there’s little benefit to making that worse by drinking beforehand.

    I might be OK with a reduced penalty at .08, but I’d like to add a slap on the wrist at an even lower level.



  • I use Matrix, and I’ve moved some conversations with people I met in public rooms there to Signal because it kept failing to transfer keys rendering it unable to decrypt messages. I haven’t seen that in a while so maybe it’s fixed, but I haven’t been using it for one-to-one conversations lately.

    Unfortunately, I’ve found most people have a lot of resistance to adding another messaging app. I don’t really understand why that is, but it’s true. Asking someone to install a messaging app when I’m their only contact who uses it and they have another way to contact me has a success rate near zero.


  • Zak@lemmy.worldtoTechnology@lemmy.world*Permanently Deleted*
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    15 days ago

    Maybe. The bad actor here seems to be the government of China, and the linked page says:

    The individuals most at risk include anyone connected to: Taiwanese independence; Tibetan rights; Uyghur Muslims and other ethnic minorities in or from China’s Xinjiang Uyghur Autonomous Region; democracy advocacy, including Hong Kong, and the Falun Gong spiritual movement.

    I can imagine them casting a wide net.


  • Zak@lemmy.worldtoPrivacy@lemmy.mlJWZ weighs in on Signal again
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    16 days ago

    What is this? A Twitter post?

    Just about. JWZ is known for his cynical hot takes on tech in general.

    I don’t think any of his complaints are invalid, though his conclusions are uncharitable at best. Making a communication tool that’s both reasonably secure and sufficiently palatable to people who don’t know how to use computers to achieve broad adoption is a hard problem with no perfect solutions. If he has a better idea, well… he’s a skilled and somewhat famous programmer; he’s better equipped than most to implement it.




  • Well… sort of.

    Batteries perform differently under load. A battery that delivers 10Wh under a 1W load will probably deliver less (and get warmer) under a 10W load. Power supplies also perform differently under load, and DC-DC switching power supplies perform differently based on the output voltage. Generally, a larger voltage conversion and/or a higher load is less efficient. There’s also going to be some base power consumption in the circuit, so the most output power is probably achieved at some sort of medium load.

    To make things more fun, batteries are usually tested under constant current, not constant power. The increasing current as the battery drains of a constant power load will result in less total power, and constant output power often means increasing input power as the battery drains.

    In short, the real world is complicated. Giving best and worst case Watt-hours could be a reasonable approach.



  • Powerbanks are where it’s most problematic. They’re usually reporting the capacity of the battery cells in mAh. Those cells will be at 2.8-4.2V during operation, but the powerbank outputs 5V, or in modern powerbanks some higher number. 5000 mAh at the 3.6V average of the cells during discharge is certainly not 5000 mAh at the 9V it’s giving to my phone.

    It’s not going to give my phone 2000 mAh @ 9V or 18 Wh as the math would suggest either because it’s well below 100% efficient. I’m not sure what’s reasonable to demand in terms of advertising here since efficiency will vary with output voltage and output wattage.