The Vibe: An extra security lock beyond just your password.
The Details: It usually asks for a temporary code from an app (like Google Authenticator) every time you log in or send funds. Even if someone steals your password, they can’t get in without that code.
Pro Tip: Always turn on 2FA on exchanges and wallets—use an authenticator app instead of SMS for better protection against SIM-swapping attacks. Save your backup codes somewhere safe offline.