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0 pointsdanparsonson1d ago0 comments

I don't know the technical details of that for sure, but I think the answer is that keys and chat history are stored on-device only; for example you lose your WhatsApp history if you don't restore a backup when moving to a new phone.

If a messaging app is showing you message history in a private browsing window then perhaps the encryption key for that history is derived from your password or something like that; that can be done locally so that all the server ever sees is encrypted data.

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tardedmeme1d ago

If you log in to the app on one phone and then in a web browser should you still be able to see your messages in the web browser?

danparsonsonOP1d ago

Sorry do you mean, that's how it works now, or, that's how you think it should work? Are you talking about Instagram or WA or something else?

edit: misread your message; if you have two sessions active at the same time, then yes I would expect both sessions to receive the same messages.

tardedmeme1d ago

What if you log into the app and then log out of the app and then log into the app again? Should you be able to see your messages?

E2EE is a fail-secure design. In case of any doubt it deletes your private messages. When applied to this case I don't think the downside of constantly losing all your messages outweighs the upside of Facebook pretending they don't have a copy of all of them.

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tardedmeme1d ago

If you log in to the app on one phone and then in a web browser should you still be able to see your messages in the web browser?

danparsonsonOP1d ago

Sorry do you mean, that's how it works now, or, that's how you think it should work? Are you talking about Instagram or WA or something else?

edit: misread your message; if you have two sessions active at the same time, then yes I would expect both sessions to receive the same messages.

tardedmeme1d ago

What if you log into the app and then log out of the app and then log into the app again? Should you be able to see your messages?

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j / k navigate · click thread line to collapse