What is Data at Rest?

Data at rest refers to data stored in persistent storage systems, such as databases, cloud storage, hard disks, or backups that are not actively moving or being processed.

Data at rest encryption is important because stored data is a valuable target. If attackers gain direct access to stored data, encryption ensures they cannot read or use it without proper keys.

Full disk encryption protects storage volumes. It does not protect against insider threats with legitimate access or database-level attacks. Field-level or client-side encryption provides stronger protection for sensitive data.

Data in transit is different from data at rest in that data in transit is actively moving across networks. Data at rest is inactive data stored on disk. Each state requires different encryption controls.

Yes. MongoDB Atlas supports encryption at rest and integrates with cloud Key Management Services. MongoDB also provides advanced client-side encryption with Queryable Encryption, protecting data at rest, in transit, and in use.