Notifications may appear on lock screens, connected devices or history. Protecting the application screen does not protect every copy.
Evaluation approach
Separate the notification message from opening details. Require an appropriate session before displaying sensitive information in the application.
Application example
A health app can announce a new result without including the diagnosis. Details appear only within an authenticated session.
Limits and considerations
System notification settings can change. Do not rely solely on default visibility.
Handling notifications after logout
Recheck the active account when opening a notification. Do not show an old queued message under a new account. Previously delivered content may remain after push registration is revoked, so client ownership checks still matter.
Checks and decisions
- Test lock screens
- Verify logout behavior
- Reduce sensitive payloads
Sources
The primary references above provide the technical basis. Example workflows and evaluation suggestions are this publication’s explanations, not independent test results for a particular product.