One of the weak links is the necessity to “update” or program the unit by downloadeing software onto our home laptops or whatever. We have no idea what the software is really doing nor do we know whether or not if it is pre-loaded with a hidden inert payload that passes our virus checker but is woken up and modified by the next update.
We buy products from China that are sold at low cost. Some are priced so low they are obviously subsidized by the chinese government so their use can be as widespread as possible. Then we have to let them into our computers so we can use the items.
The surveillance video camera debacle now taking place is a good case in point. Video cameras that were supposedly password protected actually had backdoors so they could be accessed by certain entities. These are slowly being removed from government facilities now.