3 ms·

I don't think that's why they ask for it, no.

• account42 10mo ago
  Exactly, just like all those site that added SMS 2FA didn't do it for the extra security.
  • cyphar 10mo ago
    More than one thing can be true at once. In the case of Twitter, there is evidence that the initial implementation was meant to just be a security mechanism but later someone else noticed they had a handy database of user phone numbers and decided to treat them as free marketing contact information.