Someone stealing my network bandwidth?

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Shpeckledorf

Commendable
Apr 8, 2016
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Hey everyone!

About a week ago I opened My Computer and noticed that there was another computer that I am unfamiliar with named "BRENDANS-PC" that connected to my possible remote desktop connections list. It only took me about 5 seconds to realize that the only way this computer could be added to that list is if he were connected to the network my computer is hardwired to.

The only reason I'm relatively on edge about the guy connecting to my internet is because first of all, he literally hasn't disconnected since I noticed he joined, and second of all, I remembered that my creepy high school computer apps teacher told us about how he would cruise around neighborhoods connecting to people's wifi to torrent illegal songs and movies so it wouldn't be him that got caught, which don't get me wrong, I may dabble in the act of such but I'm not about to get caught for something I didn't technically do.

Anyways, I did what I'm assuming anyone who has at least basic networking knowledge would do; I logged into my router's config (192.168.1.1) and clicked "attached devices", although I didn't see his computer connected to it in the list, just the other laptops and smartphones connected to it who live in the house. There were some blank slots that had IP addresses to either someones computer or phone, but eventually those turn into my siblings phones when they get home, so I guess they just stay on attached devices forever (???)

Long story short, I just want to know if I'm wrong when I'm thinking he's been connected to my internet, or am I just doing something wrong to stop it?

Thanks to anyone who replies in advance, any help is appreciated.

-Shpeck
 
Solution
It is certainly possible that you had an intruder. Change your wireless network password and and router admin password immediately.

Also, you should scan PCs for keyloggers.
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