They should use TOTP, no need for phone number. It also can protect you if your password have been leaked. https://en.wikipedia.org/wiki/Time-based_One-time_Pa

They should use TOTP, no need for phone number. It also can protect you if your password have been leaked. https://en.wikipedia.org/wiki/Time-based_One-time_Password_algorithm https://en.wikipedia.org/wiki/Time-based_One-time_Password_a...