Andreas Wolter 1/16/2025

Protecting database data at rest: Transparent Data Encryption, Backup Encryption or Always Encrypted

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This article provides a detailed analysis of protecting SQL Server data at rest. It examines where sensitive data resides (data files, logs, TempDB, backups), defines protection goals, and compares three key Microsoft encryption technologies: Transparent Data Encryption (TDE), Backup Encryption, and Always Encrypted, helping database professionals choose the right strategy.

Protecting database data at rest: Transparent Data Encryption, Backup Encryption or Always Encrypted

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