Two-Factor Authentication (2FA)
An extra security layer requiring a second form of verification beyond your password.
Explained Simply
2FA adds a second step to login — typically a time-based code from an authenticator app (Google Authenticator, Authy) or a hardware key (YubiKey). SMS-based 2FA is better than nothing but vulnerable to SIM-swap attacks. Authenticator apps are recommended for crypto exchanges. Hardware keys (FIDO2/U2F) are the most secure option. Enable 2FA on every exchange, email account, and crypto service. If you lose your 2FA device, recovery codes are your backup — store them securely offline.
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