What adds protection to an exchange account?
Correct answer
Answer A: Two-factor authentication (2FA).
Quick explanation
With 2FA, the password alone is not enough. You also need something such as a code from an app or a security key.
Detailed explanation
Two-factor authentication adds another proof to the password. Someone learning only the password should not gain full account access. Depending on the provider, this might use an app code or a security key.
Not all methods offer the same protection. Phone-based recovery and SMS codes may be vulnerable if someone takes over the phone number. A fake login page can also ask for a code. Choosing the method and using it safely therefore remain important.
2FA protects account access but does not remove every provider risk. It does not make a fraudulent platform trustworthy or give you the private keys to a custodial balance. Account protection and self-custody are different questions.
Example or everyday application
Someone knows your exchange password. If an independent security key is also required, the stolen password alone is not enough to log in.