How is it possible for my hdd and usb logs to be appearing on another pc. I noticed that even my usb was logged on the network whilst trying to boot Linux. Despite not being connected to the home network. Any help please really concerned
There is no such way to track the USB or HDD if your computer is not connected to the network. As you mentioned about the USB drive it is a plug-n-play device you can disconnect it from the computer.
Best way is to backup the important data and load the new OS again.