Immutable Backup

Immutable Backup — A backup designed so that stored recovery data cannot be altered or deleted during a defined retention period.

Why Immutable Backup matters in finance

It reduces the ability of ransomware or compromised administrators to destroy recovery options.

Security is also a market-infrastructure question

In financial services, immutable backup should be understood in relation to operational continuity, data integrity, payments, market infrastructure and interconnected dependencies. A control can be technically effective while still leaving material resilience risk if critical services cannot continue or recover during disruption.