Meaning
Technical constraints prevent the modification of the descriptive data that accompanies a primary file. Fixed metadata immutability ensures that the date of creation, the identity of the author and the history of access remain unchanged. This property stops being effective if the file is moved to a system that does not support the same security features.
Structural Rigidity
Hardware and software designs create an environment where data cannot be overwritten. Achieving metadata immutability requires the use of write once media or cryptographic locks that break if a change is attempted. This provides a high level of proof that the record is in its original state.
Audit Protection
Forensic records benefit from the inability of an administrator to hide their tracks. Because of metadata immutability, every action taken on a file is visible and cannot be erased. This costs the system in terms of storage space for the logs and the complexity of the security architecture.
Chronological Lock
Time stamping services link a record to a specific moment that cannot be disputed. The metadata immutability of a time stamp proves exactly when a founder made a decision or signed a contract. This provides a definitive point of reference that memory alone cannot match.
