The primary objective of performing a post-incident review is to identify the root cause of the incident. This information is used to develop and implement corrective actions to prevent similar incidents from occurring in the future. The post-incident review process may also include a re-evaluation of the impact of the incidents, the identification of vulnerabilities, and the identification of control improvements, but the primary objective is to determine the root cause of the incident. By understanding the root cause, the organization can take proactive steps to prevent similar incidents from occurring in the future and improve the overall security posture of the organization.

Unexpected outcomes may arise in production when using only sanitized data for the testing of applications. Sanitized data is data that has been purposely and permanently deleted or modified to prevent unauthorized access or misuse. Sanitized data may not reflect the real characteristics, patterns, or behaviors of the original data, and thus may not be suitable for testing applications that rely on data quality and accuracy. According to NIST, data sanitization methods can affect the usability of data for testing purposes1. The other options are not risks introduced by using sanitized data for testing applications, but rather risks that can be mitigated by using sanitized data. Data loss, data disclosure, and breaches of compliance obligations are possible consequences of using unsanitized data that contains sensitive or confidential information. Reference: 2: What is Data Sanitization? | Data Erasure Methods | Imperva 3: Data sanitization techniques: Standards, practices, legislation 1: Data sanitization - Wikipedia

Information security governance is MOST important to have in place to help ensure an organization's cybersecurity program meets the needs of the business. This is because information security governance provides the strategic direction, oversight and accountability for the cybersecurity program. It also ensures that the program aligns with the business objectives, risk appetite and compliance requirements of the organization. Information security governance involves defining roles and responsibilities, establishing policies and standards, setting goals and metrics, allocating resources and monitoring performance of the cybersecurity program.