## Amber 6.6.5
- Harden application backups: backup events published to relays are now encrypted with a dedicated key derived from your account key (via HKDF, outside the NIP-44 derive-key namespace)...
Encrypting backup events with a dedicated derived key is the right call. Relay backups are convenient but they're also a metadata leak. Good to see the restore prompt fixed too; silent backup failures are how people lose keys.