Re:ProtonMail includes Google Recaptcha for login
by protonmail on Sunday May 30, 2021 @05:11AM
(#27331790)
There actually aren't countless, almost all of them have been broken (many by Google actually), there's just one alternative, hcaptcha, which has been around only the past couple years. Back in 2014 when we first added the captcha for too many api requests, there was no other option.
> TL;DR It's a small fraction of users who are affected
Yes, though any of your users can be affected, randomly, without warning.