> Turns out that phone numbers, whilst also subject to flux, have better long-term congruence to identity Exactly why using verified phone numbers endangers a

> Turns out that phone numbers, whilst also subject to flux, have better long-term congruence to identity Exactly why using verified phone numbers endangers a user's data. A phone number is much closer to a their true identity than an email address, exposing disparate system data to be cross-referenced by breaches and malicious actors. For this very reason it's illegal in Australia to use a person's government uuid (Tax File Number) as a username. I'm sure the unwashed masses don't care right now, but the recent kerfuffle over Facebook's sneaky 2FA switcheroo and other privacy sins shows that they might care after enough scandals.