When I open the Network Security Map in NIS 2012 (v19.9.1.14) six or seven extra devices show up on my ethernet connection. Most are called 'New,' are offline, and have different physical addresses but little other specific details. I have no other ethernet-connected computers; I have a netbook and Windows 8 phone on my wireless network connected to the same cable modem.
By the way, I'm using NIS 2012 because I had lots of problems with NIS 2013 on this Windows 8 computer.
Any idea what's going on?