zlacker

>>pera+(OP)
The biggest drawback with Signal for protesters is that it exposes the user's phone number to everyone else in groups (just like WhatsApp does). There is no way to even hide the fact that you have an account on Signal. I can add phone numbers by enumeration into my contacts and Signal will show who among my contacts is on it. If the authorities don't use tactics like they did in Hong Kong, the protesters may be safe from being spied on (or worse).

>>AnonC+ul
This tradeoff is arguably a good thing.

By using phone numbers as IDs signal can rely on your phone's local contacts (meaning they don't have to send your social graph to their servers). This way they can keep very little metadata on you.

There's pretty much nothing for them to turn over except the fact that your phone number has the signal app.

Most of the other secure apps could turn over your entire contact list (which could be damaging for people in a protest that are being targeted).

Confirming a single phone number has the app is not nearly as big of a deal (I'd argue it doesn't matter at all).

>>goneho+gn
> Most of the other secure apps could turn over your entire contact list (which could be damaging for people in a protest that are being targeted).

But that doesn't help much if the entire contact list is a list of trash mail adresses (in the case of Wire) or a list of random IDs (in the case of Threema). And at least Threema does not store any information about your contacts on their servers.

Can you obtain a phone number without any ID in the US? Because you can't in large parts of Europe.