The correct answer is to conduct an impact analysis prior to deployment. An impact analysis is a process of understanding the potential consequences of changes, especially how they affect security controls and operations. By doing this, the company can identify potential security risks introduced by the update and take steps to mitigate them before the system goes live, ensuring that security is maintained throughout the change process. The other options, while they might be parts of the overall change management process, do not directly address the proactive identification and mitigation of security risks specific to the introduction of new software or updates.