I login to Fios website, home-> services->internet, click on Parental Controls, it shows me another network's devices. GE Smart Plug, Echo, Chromecast, Galaxy that I don't have.
Also Fios website home->services->internet, devices, click on the 'wheel' to configure a device, I get a device from another network "Nicolas MacBook Pro" I don't know any Nicolas
I guess others are seeing my network as well? Seems like a major security flaw