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From: | Federico Leva (Nemo) |
Subject: | Re: Is Telegram or Signal acceptable for harm reduction? |
Date: | Sat, 7 Aug 2021 09:05:16 +0300 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 |
Telegram/does/ have free clients on GNU Guix and PureOS repositories, which is great, but it is a centralized network, the server code is hidden, and it doesn’t even have end-to-end encryption! So is it a real improvement over the fully proprietary---but allegedly end-to-end encrypted---status quo?
If you mean WhatsApp, the end-to-end encryption of its groups is mere fiction, because [to simplify] the decryption keys are available to attackers and metadata is not e2e-encrypted:
https://eprint.iacr.org/2017/713.pdf Depending on your threat model, Telegram can be an improvement.That said, don't give up so easily. If we're talking about half a dozen users, you can probably just help them create a Matrix account, by meeting in person if necessary. In my experience they'll soon tell you it's easier than they thought.
Federico
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