scamWhen two-factor authentication is useless
Two-factor authentication protects your account from theft — until you yourself give away your one-time password.
OTP
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2FAWhat 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.