Authy's trying to make an open standard proprietary. I don't understand why you have to sign up for it with your phone number, or how they've gotten websites li

Authy's trying to make an open standard proprietary. I don't understand why you have to sign up for it with your phone number, or how they've gotten websites like Twitch to offer Authy-exclusive 2FA. In any case I was able to phish myself out of my old phone's Authy account really easily. It's a really bad thing to happen for regular consumers.