Surveillance requires two-way mutual authentication before any client is allowed to view the processed output. This means that you can trust that the data you are viewing is coming from an authorized camera and the system is certain that it is sending data to an authorized client.
This security has been implemented using TLS Certificate, USB Encryption Tokens for PCs and password protected Keystores in Android.
Permissions are implemented in such a way that only the cameras and recordings allowed for a specific user are visible to him. Not even the designer of this software can access processed data without the admin giving him permission to do so.