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An immutable backup is a protected copy of data that cannot be modified or deleted during a defined retention period, even by accounts that normally possess administrative privileges. Certification exams may connect immutability with ransomware recovery, insider threats, retention controls, and protection against compromised backup administrators. Attackers frequently attempt to erase or encrypt recovery data before disrupting production systems, so an immutable copy can preserve a trusted restoration point. Organizations should separate backup credentials, restrict management access…
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