Signal has usernames? Huh. When did that happen?
this post was submitted on 02 Mar 2025
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The Signal messenger and protocol.
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A year or so ago? I think its part of their transition away from phone numbers?
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Desktop signal yes.
Doesn't having them expire/get reused open them up to impersonation attacks?
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Hopefully by "taken" it means that it is in some kind of cooldown before it can be used again.