• @nachtigall@feddit.de
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    fedilink
    501 year ago

    When someone sends a message to another WhatsApp user, their device creates a different session key for each device the receiver is using, thus telling the sender how many devices the receiver is using.

    So like any other service using the Signal protocol, or am I wrong?

      • AwkwardLookMonkeyPuppet
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        fedilink
        31 year ago

        What are some good reasons for this? My initial thought is that it’s intrusive and violates a user’s privacy.

        • technologicalcaveman
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          fedilink
          31 year ago

          Well, I knew my brother was getting a new phone soon anyways so getting notified his device changed wasn’t a surprise. Otherwise, getting notified hia device changed without that knowledge may have triggered me to contact him elsewhere to ask if he did. Signal is mostly going to be conversations between close/trusted individuals. It doesn’t tell you what they changed to, the message basically tells you that if this person didn’t legitimately change devices then it might be a bad actor.

  • This is a security feature to let you know that the sender may be an imposter, right? Like matrix’s verified sessions, if my friend gets a new phone or pc it’s unverified and I have to verify the new session through another means, like in person or phone.