Unwanted device connected to my network

[Shabra]

I just signed up with xfinity about a month ago, my first time handling my own home internet. Before it was roommates etc. I noticed through the xfinity app on my phone there was a device labeled as model "linux device" and operating system "linux" connected to my home network. I do not own any device running linux and I'm worried because I've heard linux is good for hacking...I paused the device easily enough but came here for suggestions on what else I can or should do about this issue. Thanks in advance.

[flatlander3]

Change the wifi password.  Problem solved.  It can't connect.

You'll have to forget, then rejoin your devices.  iPhone is a bit touchy that way.  windows/linux/mac may just say the key is bad and ask you for another key, but they get hung up on the key exchange sometimes.  It's better to forget the network, then rejoin.

[strega7]

Are you sure about not owning a Linux device?  Being smallish (and free!) is quite popular for use in: routers, TVs, TV streamers, DVRs, home security devices, TVs, thermostats, cars, refrigerators...  If you still think not, then you should probably change your password as @flatlander3 suggested, and then slowly add devices back to the network one at a time and see if the "linux device" re-appears. 

[Shabra]

Was away from home past few days so haven't had a chance to check but seems the device that I paused was indeed one of my devices. My girlfriend's old obama phone to be exact. (Yes she lives with me I don't just have her phone) Thing is, said phone is rather ridden with spam notifications and all kinds of junk, but I checked the phone settings and is running Android....not linux. Is it maybe that some one is maliciously connecting through her phone with a linux device or something less benign. Thanks again in advance.