They could drop phone numbers and only have usernames, but they refuse. They'd rather give all that money to the phone company than let people use their service without requiring a phone number.
Kinda makes you think, huh?
"#Signal is expensive" was very informative.
https://signal.org/blog/signal-is-expensive/
40 % of the infrastructure expenditure is burnt to send #SMS codes.
I was forced to receive an SMS from Signal more than once after the first time. The SMS arrived from a sender I had never heard about. Signal's subprocessors are not listed on https://signal.org/legal/#privacy-policy (which doesn't even acknowledge the existence of #GDPR).
#infosec #privacy
