Patent ID: 11947427
Assignee: EMC IP HOLDING COMPANY LLC
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 14:
15. An electronic device, comprising:
at least one processing unit; and
at least one memory, the at least one memory being coupled to the at least one processing unit and storing instructions, which when executed by the at least one processing unit, cause the at least one processing unit to perform an action, the action comprising:
acquiring a lock attribute record in a lock attribute record blockchain from a data protection network for backing up data, the data protection network including a plurality of data protection servers that reach a consensus on the lock attribute record blockchain, the lock attribute record comprising a first attribute value of an attribute of a lock operation, the lock operation being used for preventing a backup of the data stored in a storage server from being tampered with, the lock attribute record being a block in the lock attribute record blockchain, the first attribute value comprising a first retention time of the lock operation, the first retention time generated by one the plurality of data protection servers;
acquiring, based on the lock attribute record, a second attribute value of the attribute of the lock operation from the storage server, the second attribute value comprising a second retention time of the lock operation; and
generating, based on determining that the first retention time does not match the second retention time, an alarm indicating that the backup is tampered with
wherein the attribute comprises at least a timestamp representing a time at which the lock attribute record is created; and
wherein acquiring the lock attribute record comprises:
acquiring a plurality of candidate lock attribute records for the backup in the lock attribute record blockchain from the data protection network, and
determining a candidate lock attribute record with the time indicated by the timestamp exceeding a time threshold among the plurality of candidate lock attribute records as the lock attribute record.