Notifications Security

Notification Content

Push notifications don't contain message text. When receiving a notification, the app establishes a secure connection with the server, downloads the message content, decrypts it, and only then displays it as a notification to the user.

The notification itself carries only service data that lets the app understand what happened: chat, message, and sender IDs, chat type and event type, unread message and missed call counters, and for conferences — the name and start time. The notification contains no message text, attachments, call content, or user data.

Hiding Notification Text

For all client apps, in the app or OS you can configure notifications to appear on the screen without text (see below).