We've seen companies do a lot of silly things with SMS. Facebook used 2FA SMS for ads [1]. Companies sometimes use your phone number from SMS 2FA as a single fa

We've seen companies do a lot of silly things with SMS. Facebook used 2FA SMS for ads [1]. Companies sometimes use your phone number from SMS 2FA as a single factor for password reset. I think this is debatable. [1] https://news.sophos.com/en-us/2018/10/01/facebook-turn-off-sms-2fa-if-you-dont-want-your-number-used-for-ads/ https://news.sophos.com/en-us/2018/10/01/facebook-turn-off-s...