Toph now offers email‑based two‑factor authentication (2FA). When enabled, every password login triggers a one‑time 6‑digit code that is sent to the user’s primary email address. This extra step helps keep your programming challenges and contests safe from unauthorized access.
This is a companion discussion topic for the original entry at https://blog.toph.co/changelog/2025-11-04-email-based-two-factor-authentication