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Basically, a good way to never trust "it's okay, the data is anonymized" again is simply knowing what the "Hemisphere Program" is.
https://www.eff.org/cases/hemisphere
In short, the US government got access to number from, number to, datetime, length and sometimes location information for every call passing through AT&T's network from 1987 to today.
Then they ran an algorithm to de-anonymize every burner phone based on behavior. They did this because maybe some of those burners were used by drug dealers.
I think if you really care about privacy then you basically have to run your own for people you know and trust. At that point it doesn’t really matter what it is. It also depends on your threat profile. If you don’t actually care that people know your contact network, then Signal or any other app is perfectly fine. For vast majority of people it really doesn’t matter. The point is that Signal isn’t a good solution for people who do genuinely care about privacy.
Running your own isn’t a great answer as that doesn’t necessarily mean it is secure. I personally like Simplex Chat and Briar. Matrix would be on the list if it was a little bit more stable.
Running your own server doesn’t necessarily mean it’s secure, but it’s a lot more likely to be secure than a server somebody else runs. The very fact that the server is only used by a handful of people you know and trust makes it infinitely more secure. Also as you say in your other reply:
At the end of the day any server you don’t control shouldn’t be trusted.
I think if you really care about privacy then you basically have to run your own for people you know and trust. At that point it doesn’t really matter what it is. It also depends on your threat profile. If you don’t actually care that people know your contact network, then Signal or any other app is perfectly fine. For vast majority of people it really doesn’t matter. The point is that Signal isn’t a good solution for people who do genuinely care about privacy.
Running your own isn’t a great answer as that doesn’t necessarily mean it is secure. I personally like Simplex Chat and Briar. Matrix would be on the list if it was a little bit more stable.
Running your own server doesn’t necessarily mean it’s secure, but it’s a lot more likely to be secure than a server somebody else runs. The very fact that the server is only used by a handful of people you know and trust makes it infinitely more secure. Also as you say in your other reply:
and this Matrix? https://github.com/libremonde-org/paper-research-privacy-matrix.org/blob/master/part1/README.md
Matrix has a habit of eating my chats. They will suddenly be all “message can’t be decrypted”