Question 770
During a payment-platform modernization at a payment clearing organization, the IS auditor learns that certificate expiration causes repeated service outages with no renewal owner. The affected operation supports merchant settlement and reconciliation. Finance and settlement integrity depend on this operation. Which audit procedure would MOST directly validate the suspected control gap?
Explanation
Correct Answer
Correct. Examine certificate issuance, chain validation, revocation, expiry monitoring and key custody; test rejection conditions. The procedure directly tests the reported condition that certificate expiration causes repeated service outages with no renewal owner. A defensible IS audit conclusion requires relevant and reliable evidence from the actual control population and period.
Incorrect Answers
Not the most direct fieldwork procedure for these facts. It changes a different feature than evidence appropriate to the audit conclusion.
Not the most direct fieldwork procedure for these facts. That change would not implement evidence appropriate to the audit conclusion.
Not the most direct fieldwork procedure for these facts. The evidence appropriate to the audit conclusion prerequisite remains unaddressed.