For a IoT project we use IoTHub to connect our devices to the cloud. The last week we noticed that our device count randomly grew everynight. Its seems like a random device is connected and after 10 minutes or less it automaticly disconnects.
We're currently testing a use-case to see if IoTHub could be used in our production environment but before we make the choice we would like to know why there are random devices appearing.

As you can see in this image our total devices started spiking everynight since this weekend.
Is anyone else experiencing the same issue?






