Certified in Risk and Information Systems Control (CRISC) — Question 490

Which of the following would BEST help secure online financial transactions from improper users?

Answer options

• A. Multi-factor authentication
• B. Periodic review of audit trails
• C. Multi-level authorization
• D. Review of log-in attempts

Correct answer: A

Explanation

Multi-factor authentication is the best choice because it requires users to provide multiple forms of verification, making it significantly more difficult for unauthorized users to gain access. While periodic reviews of audit trails, multi-level authorization, and reviews of log-in attempts are important security practices, they do not directly prevent unauthorized access in real-time like multi-factor authentication does.