2FAWhen you get a login code for an account you don’t have
What to do if you receive a text with a two-factor authentication code from a service you’ve never registered for.
OTP
3 articles
scamWhen two-factor authentication is useless
Two-factor authentication protects your account from theft — until you yourself give away your one-time password.
What to do when you receive unsolicited messages containing login codes
One-time codes and two-factor authentication securely protect you from account theft. If you receive such a code or a request to enter it when you aren’t logging in, it may be an attempt to hack into your account.