This checklist outlines practical steps to reduce insider risk during mergers and acquisitions, a period when organizations face increased exposure to data breaches, misuse, and compliance issues. It covers key areas such as due diligence, population segmentation, technology deployment, data loss prevention, governance, and secure integration. The guide emphasizes identifying sensitive data, monitoring high-risk users, enforcing least-privilege access, and ensuring consistent logging and visibility across both organizations. It also highlights the importance of proactive threat hunting, continuous monitoring, and coordinated communication between teams. Overall, it provides a structured approach to maintaining security, visibility, and operational stability throughout the M&A lifecycle.

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