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Data Encryption at Rest
Encryption
Storage-layer encryption with key control.
Definition
Encryption at rest encrypts stored data (filesystems, databases, backups) using cryptographic keys, often combined with access controls and key management.
In plain English
Storage-layer encryption with key control.
Why this matters
Why it matters: It reduces impact of physical theft and unauthorized storage access, and supports compliance requirements.
Example
Example: Full-disk encryption (FDE) with keys protected by a secure enclave or TPM.