The important thing to remember is that all Telegram messages
are always securely encrypted. The difference between messages
in Secret Chats and ordinary Telegram messages is in the
encryption type: client-client in case of Secret Chats,
client-server/server-client for ordinary chats.
Where "securely encrypted" means that the Telegram server has full access to message contents for ordinary chats. All chats should be "Secret Chats", not the other way around.
