A financial services company schedules nightly backups of customer databases. The backup system initiates a TLS 1.3 tunnel and copies the encrypted backup files from the primary data center in Chicago to a geographically separate disaster-recovery site in Denver. During the actual copy operation across the leased MPLS link, in which data state must the backup files be protected?
The data is at rest at the primary data center until the transfer ends.
The data is archived until it reaches the disaster-recovery site.
The data is in use while the backup application accesses it.
The data is in transit during the copy across the network.
Because the files are actively moving between two locations, they are in the "in transit" state. Data in transit should be protected with controls such as strong end-to-end encryption and authenticated connections. Data at rest would apply once the files are stored at either site, and data in use would apply only when the files are opened and processed in memory. The term "archived" refers to long-term inactive storage, which is not occurring during the copy operation.
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