Câu 419: CISA: Certified Information Systems Auditor

In an environment that automatically reports all program changes, which of the following is the MOST efficient way to detect unauthorized changes to production programs?

1. A. Periodically running and reviewing test data against production programs
2. B. Verifying user management approval of modifications
3. C. Reviewing the last compile date of production programs — đáp án hiện tại
4. D. Manually comparing code in production programs to controlled copies