Câu 57: CISA: Certified Information Systems Auditor

Which of the following should be of GREATEST concern to an IS auditor reviewing data conversion and migration during the implementation of a new application system?

1. A. Data conversion was performed using manual processes.
2. B. Unauthorized data modifications occurred during conversion. — đáp án hiện tại
3. C. The change management process was not formally documented.
4. D. Backups of the old system and data are not available online.