|my new room mate helped me with a router set up before and at some point I changed the ISP and reset everything with a new password. My room mate asked for the new password, so I logged into my router and from there he took over, copied the password and also opened up a port range to go to some IP address which I don't know whose it is. |
The next day my laptop wouldn't start and ran some Repair application. Eventually it started back up and I ran a virus and spam check but found nothing.
My question is: why would my roomate open up a range of ports? And what risk does this pose for me? I actually just disabled the open ports but I don't want to overreact either.