Signal has always been transparent about what information get sent to the server: https://signal.org/blog/private-contact-discovery/
Even if some adversary is doing some kind of correlation to glean metadata from your traffic, they are definitely doing the table stakes here to preserve privacy and not just send your information off willy-nilly.
speaking of dense exotic matter https://en.wikipedia.org/wiki/White_dwarf
As Signal is on a centralized Google Cloud instance, it can easily be shut down by the providers and that is that.
> nobody knows what they did during that year).
They (and Moxie) were too busy shoving their private cryptocurrency scam project in Signal to later get as many users using it as possible to then pump and dump the coins on exchanges.
Signal is a complete joke.
Signal uses centralized server with closed source (they hidden code for one year until they finally gave up when users nagged them, nobody knows what they did during that year), Signal requires your phone number, Signal doesn't allow third party apps officially and tried to push some shady crypto, I mean how many red flags you need to avoid such POS app?