• Dem Bosain
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    326 months ago

    Why is Signal almost universally defended whenever another security flaw is discovered? They’re not secure, they don’t address security issues, and their business model is unsustainable in the long term.

    But, but, if you have malware “you have bigger problems”. But, but, an attacker would have to have “physical access” to exploit this. Wow, such bullshit. Do some of you people really understand what you’re posting?

    But, but, “windows is compromised right out of the box”. Yes…and?

    But, but, “Signal doesn’t claim to be secure”. Fuck off, yes they do.

    But, but, “just use disk encryption”. Just…no…WTF?

    Anybody using Signal for secure messaging is misguided. Any on of your recipients could be using the desktop app and there’s no way to know unless they tell you. On top of that, all messages filter through Signal’s servers, adding a single-point-of-failure to everything. Take away the servers, no more Signal.

    • @Zak@lemmy.world
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      356 months ago

      If someone can read my Signal keys on my desktop, they can also:

      • Replace my Signal app with a maliciously modified version
      • Install a program that sends the contents of my desktop notifications (likely including Signal messages) somewhere
      • Install a keylogger
      • Run a program that captures screenshots when certain conditions are met
      • [a long list of other malware things]

      Signal should change this because it would add a little friction to a certain type of attack, but a messaging app designed for ease of use and mainstream acceptance cannot provide a lot of protection against an attacker who has already gained the ability to run arbitrary code on your user account.

      • @douglasg14b@lemmy.world
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        6 months ago

        Not necessarily.

        https://en.m.wikipedia.org/wiki/Swiss_cheese_model

        If you read anything, at least read this link to self correct.


        This is a common area where non-security professionals out themselves as not actually being such: The broken/fallacy reasoning about security risk management. Generally the same “Dismissive security by way of ignorance” premises.

        It’s fundamentally the same as “safety” (Think OSHA and CSB) The same thought processes, the same risk models, the same risk factors…etc

        And similarly the same negligence towards filling in holes in your “swiss cheese model”.

        “Oh that can’t happen because that would mean x,y,z would have to happen and those are even worse”

        “Oh that’s not possible because A happening means C would have to happen first, so we don’t need to consider this is a risk”

        …etc

        The same logic you’re using is the same logic that the industry has decades of evidence showing how wrong it is.

        Decades of evidence indicating that you are wrong, you know infinitely less than you think you do, and you most definitely are not capable of exhaustively enumerating all influencing factors. No one is. It’s beyond arrogant for anyone to think that they could 🤦🤦 🤦

        Thus, most risks are considered valid risks (this doesn’t necessarily mean they are all mitigatable though). Each risk is a hole in your model. And each hole is in itself at a unique risk of lining up with other holes, and developing into an actual safety or security incident.

        In this case

        • signal was alerted to this over 6 years ago
        • the framework they use for the desktop app already has built-in features for this problem.
          • this is a common problem with common solutions that are industry-wide.
        • someone has already made a pull request to enable the electron safe storage API. And signal has ignored it.

        Thus this is just straight up negligence on their part.

        There’s not really much in the way of good excuses here. We’re talking about a run of the mill problem that has baked in solutions in most major frameworks including the one signal uses.

        https://www.electronjs.org/docs/latest/api/safe-storage

        • @fuzzzerd@programming.dev
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          46 months ago

          I was just nodding along, reading your post thinking, yup, agreed. Until I saw there was a PR to fix it that signal ignored, that seems odd and there must be some mitigating circumstances on why they haven’t merged it.

          Otherwise that’s just inexcusable.

          • The PR had some issues regarding files that were pushed that shouldn’t have been, adding refactors that should have been in separate PRs, etc…

            Though the main reason is that Signal doesn’t consider this issue a part of their threat model.

      • @gomp@lemmy.ml
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        6 months ago

        Those are outside Signal’s scope and depend entirely on your OS and your (or your sysadmin’s) security practices (eg. I’m almost sure in linux you need extra privileges for those things on top of just read access to the user’s home directory).

        The point is, why didn’t the Signal devs code it the proper way and obtain the credentials every time (interactively from the user or automatically via the OS password manager) instead of just storing them in plain text?

        • @douglasg14b@lemmy.world
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          66 months ago

          They’re arguing a red herring. They don’t understand security risk modeling, argument about signals scope let’s their broken premise dig deeper. It’s fundamentally flawed.

          It’s a risk and should be mitigated using common tools already provided by every major operating system (ie. Keychain).

          • Liz
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            36 months ago

            “Highways shouldn’t have guard rails because if you hit one you’ve already gone off the road anyway.”

        • @Zak@lemmy.world
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          56 months ago

          You’d need write access to the user’s home directory, but doing something with desktop notifications on modern Linux is as simple as

          dbus-monitor "interface='org.freedesktop.Notifications'" | grep --line-buffered "member=Notify\|string" | [insert command here]

          Replacing the Signal app for that user also doesn’t require elevated privileges unless the home directory is mounted noexec.

          • @gomp@lemmy.ml
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            16 months ago

            I don’t see the reasoning in your answer (I do see its passive-aggressiveness, but chose to ignore it).

            I asked “why?”; does your reply mean “because lack of manpower”, “because lack of skill” or something else entirely?

            In case you are new to the FOSS world, that being “open source” doesn’t mean that something cannot be criticized or that people without the skill (or time!) to submit PRs must shut the fu*k up.

    • @refalo@programming.dev
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      6 months ago

      98% of desktop apps (at least on Windows and Linux) are already broken by design anyways. Any one app can spy on and keylog all other apps, all your home folder data, everything. And anyone can write a desktop app, so only using solutions that (currently) don’t have a desktop app version, seems silly to me.

    • lemmyvore
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      46 months ago

      Now replace “signal” in your comment with “ssh” and think it over.

    • Dessalines
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      26 months ago

      Basically for the same reason people often defend apple: the user interface is shiny, and they claim to be privacy oriented.

      Signal is a centralized US hosted service, that alone should be enough to disqualify it, outside of our many other criticisms.

    • @uis@lemm.ee
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      06 months ago

      But, but, “just use disk encryption”. Just…no…WTF?

      So not encrypting keys is bad, but actually encrypting them is bad too? Ok.

      Any on of your recipients could be using the desktop app and there’s no way to know unless they tell you.

      Another applefan? How it THIS supposed to be in scope of E2EE? Moreover, how having a way to know if recepient is using desktop app is not opposite of privacy?

      On top of that, all messages filter through Signal’s servers, adding a single-point-of-failure to everything. Take away the servers, no more Signal.

      Indeed. This is why I use Matrix. Also, fuck showing phone numbers to everyone(I heard they did something about it) and registration with phone numbers.

      • Dem Bosain
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        06 months ago

        Any “secure” so that relies on someone else for security is not secure.

        Fuck the scope of E2EE. Signal makes a lot of claims on their website that are laughable. The desktop app is their main weakness. Attachments are stored unencrypted, keys in plaintext. If they were serious about security, they would depricate the windows app and block it from their servers.

        WTF does Apple have to do with anything?

        • @uis@lemm.ee
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          06 months ago

          Any “secure” so that relies on someone else for security is not secure.

          Fuck the scope of E2EE.

          When someone has FSB/NSA agent behind them reading messages, no amount of encryption will help. Biggest cybersecurity vulnreability is located between monitor and chair. When you are texting someone else, that someone else’s chair-monitor space is also vulnreable.

          Signal makes a lot of claims on their website that are laughable.

          Well, maybe. I didn’t read their claims, nor I use signal.

          Attachments are stored unencrypted, keys in plaintext.

          Is OS-level encryption plaintext or not? If yes, then they are encrypted, provided user enables such feature in OS. If not - nothing if encrypted fundamentally.

          If they were serious about security, they would depricate the windows app and block it from their servers.

          WTF does Apple have to do with anything?

          You just used applefans’ argument. Yeah, I wonder what.

          • Dem Bosain
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            06 months ago

            Well, maybe. I didn’t read their claims, nor I use signal.

            Your opinions are invalid.

    • @SeattleRain@lemmy.world
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      -56 months ago

      What app stops a pre install keylogger. I’m all for hearing criticism of Signal but it’s always about things they can’t control.