An IT auditor is reviewing a bank's change management process for its core banking system. Which of the following represents the MOST significant control weakness?
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A
Change requests are documented using a paper-based form before being entered into the tracking system.
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B
The same developer who codes a change is responsible for deploying it into the production environment.
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C
End-user testing is performed in a dedicated test environment but not by the original requester.
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D
Emergency changes are verbally approved and documented retrospectively within five business days.