They aren't really connected.
This cropped up in earlier versions of Windows but something fixed it. I did see it the other day on the first boot of a W10 machine but the phone disappeared very quickly. The Windows Connect service is what is generating them, although it isn't even established that they are 'real'.
See
http://answers.microsoft.com/en-us/w...fae84cd?page=3
There's nothing to worry about and the security of the system is not compromised.
Original discussion in Eight Forums back in 2013, the common factor does seem to be Superhubs... the last couple of pages should help put your mind at ease:
http://www.eightforums.com/network-s...why-how-7.html