Systems Analyst: What is the difference between data at rest and data in transit encryption?

Data at Rest — stored data encryption. Data in Transit — moving data encryption.

Data at Rest:

• Encrypt stored data.
• Database, files, backups.
• AES-256.
• Protects against physical access.

Data in Transit:

• Encrypt moving data.
• Network, API calls.
• TLS/SSL.
• Protects against interception.

Key differences:

• At Rest — stored.
• In Transit — moving.
• At Rest — AES.
• In Transit — TLS.