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RichFelker's profile
Rich Felker
Rich Felker
Rich Felker
@RichFelker

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Rich Felker

@RichFelker

Yeah, I do @musllibc, FOSS & infosec stuff. But now is not the time for a mostly-/only-tech Twitter feed.

musl-libc.org
Joined March 2014

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    1. CopperheadOS‏ @CopperheadOS Mar 24
      Replying to @CopperheadOS @RichFelker and

      It's really silly trying to explain to us how it works or what the pitfalls are when we have a lot of experience with it. Could go on long rants about everything that's wrong with it and what they should be doing but it's not at all what people without experience keep claiming.

      1 reply 0 retweets 0 likes
    2. CopperheadOS‏ @CopperheadOS Mar 24
      Replying to @CopperheadOS @RichFelker and

      If you want to talk about garbage privacy how about both Android and iOS granting apps access to sensors without needing any permissions. Can do coarse 100-200Hz audio recording (ML -> detect speech), track movement (ML -> match to routes to find location), etc. with 0 perms.

      2 replies 0 retweets 1 like
    3. CopperheadOS‏ @CopperheadOS Mar 24
      Replying to @CopperheadOS @RichFelker and

      Being able to explicitly grant apps access to get phone state information and SMS/MMS/RCS data has nothing on that. At least that's something you have to very explicitly consent to doing and you can change your mind for future data.

      1 reply 0 retweets 0 likes
    4. CopperheadOS‏ @CopperheadOS Mar 24
      Replying to @CopperheadOS @RichFelker and

      Not sure what's hard to understand about the major usability issues of silently blocking stuff with no UI presented when it's happening. It's the #1 support issue that we have to deal with: using silent ad-blocking, disabling root CAs, disabling permissions / apps.

      2 replies 0 retweets 0 likes
    5. Rich Felker‏ @RichFelker Mar 24
      Replying to @CopperheadOS @TheDaveCA @matthew_d_green

      Your analogies with dns blackholing, disabling root CAs, etc. are not valid. Nothing, EVER, needs to read your call logs or SMS messages.

      3 replies 0 retweets 0 likes
    6. CopperheadOS‏ @CopperheadOS Mar 24
      Replying to @RichFelker @TheDaveCA @matthew_d_green

      That's a completely different topic than the permission model stuff and silently blocking stuff. The original topic has a simple answer: they decided to support alternate dialers and messaging apps, which has the drawback of letting users shoot themselves in the foot.

      2 replies 0 retweets 0 likes
    7. Rich Felker‏ @RichFelker Mar 24
      Replying to @CopperheadOS @TheDaveCA @matthew_d_green

      Alternative dialers & messaging apps have no reason to have access to each other's data.

      1 reply 0 retweets 0 likes
    8. CopperheadOS‏ @CopperheadOS Mar 24
      Replying to @RichFelker @TheDaveCA @matthew_d_green

      Talking about SMS/MMS, not alternative forms of messaging. You can only have one at a time, and if people want to migrate they need a way to export and import their data. Supporting that means letting people get tricked into giving it to a sketchy app.

      2 replies 0 retweets 0 likes
    9. Rich Felker‏ @RichFelker Mar 24
      Replying to @CopperheadOS @TheDaveCA @matthew_d_green

      I understood that, and no it doesn't. Don't allow new app to initiate export process. Require initiation from old app or settings.

      2 replies 0 retweets 0 likes
    10. CopperheadOS‏ @CopperheadOS Mar 24
      Replying to @RichFelker @TheDaveCA @matthew_d_green

      The app can just ask you to do that and send you there. It's not that much difference from needing to spawn a system dialog. A lot of these workflows already send you to Settings.

      2 replies 0 retweets 0 likes
      Rich Felker‏ @RichFelker Mar 24
      Replying to @CopperheadOS @TheDaveCA @matthew_d_green

      Don't allow any "send you there" action.

      5:47 PM - 24 Mar 2018
      1 reply 0 retweets 0 likes
        1. New conversation
        2. CopperheadOS‏ @CopperheadOS Mar 24
          Replying to @RichFelker @TheDaveCA @matthew_d_green

          So lets say someone genuinely needs an accessibility service because their phone is nearly impossible to use without it. Is making it difficult to find the menu for that instead of the app being able to send you to the accessibility page really an improvement?

          1 reply 0 retweets 0 likes
        3. CopperheadOS‏ @CopperheadOS Mar 24
          Replying to @CopperheadOS @RichFelker and

          Either way, it's the same UI there. And BTW, accessibility services are pretty much the most dangerous power available to third party apps. It's also very widely abused for hacks, advertising nonsense and evil things.

          1 reply 0 retweets 0 likes
        4. CopperheadOS‏ @CopperheadOS Mar 24
          Replying to @CopperheadOS @RichFelker and

          People getting tricked by evil apps into enabled accessibility services go to the same accessibility settings page as they would opening Settings by hand and see the same warning. It only means you don't need to open up Settings + navigate to that page.

          1 reply 0 retweets 0 likes
        5. CopperheadOS‏ @CopperheadOS Mar 24
          Replying to @CopperheadOS @RichFelker and

          And to clarify something, by "hacks", don't mean "hacking someone" but meaning fancy overlay features power users like to have. For example, it was possible to implement red shift apps via accessibility services for phones not providing it in the base OS (it's in AOSP now).

          1 reply 0 retweets 0 likes
        6. CopperheadOS‏ @CopperheadOS Mar 24
          Replying to @CopperheadOS @RichFelker and

          It's a powerful, scary feature meant for people that genuinely have disabilities and need all kinds of assorted services to help them. An app can't just prompt you with a dialog for it. Needs to be enabled via Settings with an explicit warning dialog there.

          1 reply 0 retweets 0 likes
        7. CopperheadOS‏ @CopperheadOS Mar 24
          Replying to @CopperheadOS @RichFelker and

          However, despite that, it was widely used not just for actual accessibility services and malware using it for evil. It was used for hacking together all kinds of frills that people ended up widely using. Apps made by Facebook, etc. end up using stuff like that for frills / ads.

          1 reply 0 retweets 0 likes
        8. CopperheadOS‏ @CopperheadOS Mar 24
          Replying to @CopperheadOS @RichFelker and

          If you have the permission, it's going to be used for all kinds of unintended things and users will do whatever it takes to get the app / feature to work. Even security-conscious people are going to give in to enabling stuff like this if they really want something to work.

          0 replies 0 retweets 0 likes
        9. End of conversation

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