# Backup Encryption at Rest GameCloud backups are stored in S3-compatible object storage. Production deployments should enable: 1. **Bucket SSE** — Server-side encryption (AES-256) on the backup bucket 2. **Application envelope encryption** (roadmap) — Per-backup data keys wrapped with `ENCRYPTION_KEY` 3. **Key rotation** — Documented in `docs/security/secrets.md` Current MVP stores backups without client-side encryption. Enable bucket policies before production.