[PythonDeveloper]

While it's unlikely as it would spell the demise of the manufacturer/brand if made public, yes.

If the manufacturer installed VNC and connected out to a remote server when you came online, yes, this could happen.

You could use WireShark on your PC/Mac attached to the same network to see if the tablet was sending VNC (or similar) data to or from a remote location fairly easily.

It's a well known fact that Apple installed "Keys-dropping" software on their devices to track what you do, but I don't believe it was a 2-way connection. I believe the data was just reported, but not received by the device.