Certified in Risk and Information Systems Control (CRISC) — Question 1088

Which of the following would BEST support the integrity of online financial transactions?

Answer options

• A. Implementing blockchain technology
• B. Developing an integrated audit facility
• C. Deploying multi-factor authentication
• D. Implementing audit trail logs

Correct answer: C

Explanation

Multi-factor authentication (MFA) is crucial for enhancing the security of online financial transactions by requiring multiple forms of verification before granting access. While blockchain technology and audit logs contribute to security in different ways, they do not address user authentication as directly as MFA does. An integrated audit facility also does not provide immediate user verification, which is essential for integrity in transactions.