Mergers and acquisitions introduce major access risks, with fractured identity systems and unmonitored admin rights creating prime attack surfaces. CyberArk and KPMG recommend auditing early to uncover vulnerabilities, avoiding an all-or-nothing replacement of legacy systems, and aligning cloud access policies across diverse platforms with just-in-time or Zero-Standing Privileges. Overlooked entitlements and unmanaged APIs can expose data, as seen in breaches at Marriott-Starwood and T-Mobile. To mitigate immediate risks, organizations should deploy compensating controls like PAM-based MFA, endpoint monitoring, and restricted admin rights while phasing in full PAM integration.

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