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Encryption at Rest

Encrypting stored data so a stolen disk or snapshot is unreadable without the key; it protects against storage-layer compromise but not against any principal authorized to read through the service, which is why access control still matters.

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Encryption at Rest vs Encryption in Transit in Cloud Systems

Encryption at rest and encryption in transit are two complementary security mechanisms distinguished by the state of data they protect: encryption at rest secures data while it is stored persistently…