Which practice best protects customer privacy?

• A. Share passwords
• B. Write password on sticky note
• C. Reuse passwords across apps
• D. Use MFA

Answer: (D)

Multi-factor authentication adds an extra layer of security beyond a password, requiring something you know plus something you have or something you are. This means even if a password is stolen, an attacker still can’t access the account without the second factor, which greatly reduces the chance of unauthorized access and protects customer privacy. MFA also helps guard against phishing because the attacker would need the second factor to complete a login, not just the stolen credential.

The other practices create obvious weak points: sharing passwords, writing them on sticky notes, or reusing the same password across multiple apps makes it far more likely that a single breach exposes many accounts and the sensitive data inside them.