Even State Department-funded Human Rights Watch admits that authorities combine legal and illegal methods to obtain convictions: https://text.hrw.org/report/2018/01/09/dark-side/secret-origins-evidence-us-criminal-cases
Combining dragnet surveillance with device hacking is intended in the design of both tools. Hence, State Department-funded Signal dupes you into handing over your identity as part of the population-centric mapping. In custody, your phone will be hacked when it is taken away if it’s important.
https://xcancel.com/hannahcrileyy/status/2034273723667161480#m
All giving out your number provides is that you have ever used Signal.
They’re saying ever using a private chat service is terrorism. That’s not really on Signal.
All your phone number provides is that you have ever used signal? Not what tower you’re connected to and therefore approximate realtime location? Your full identity via your telco? Social graph and history of your calls and texts?
I’m not saying it’s their fault or that they are volunteering any information, but that’s how it is for any US-based corporation (doesn’t matter if it’s a nonprofit, any legal entity that can be subpoenaed)