Very interesting point. Phone numbers are cancer
"#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
Discussion
What's the problem? The CIA is a rich organization and will pay for everything.