Decryption failure, signature invalid, and identity-not-found errors appear only in the bottom status bar, in the same style and position as informational messages like "Loaded: 42 bytes". A user who is not watching the bar closely can miss a failed verification or a decryption error entirely. Security-critical failures need a visible, persistent indicator — a colored banner, a red status line, or a brief modal — that makes them impossible to overlook.
Decryption failure, signature invalid, and identity-not-found errors appear only in the bottom status bar, in the same style and position as informational messages like "Loaded: 42 bytes". A user who is not watching the bar closely can miss a failed verification or a decryption error entirely. Security-critical failures need a visible, persistent indicator — a colored banner, a red status line, or a brief modal — that makes them impossible to overlook.