I have a pc not connected to the internet (to keep my files totally secure). Could the hard drive of my pc be accessed through a usb dongle used wirelessly to connect a mouse and keyboard?
A hacker could receive your username and password (or any other keystrokes) from an insecure wireless mouse and keyboard. However, without a monitor to view the data or an internet connection, there isnt a whole lot they could do. Typically wireless mice and keyboards have poor range, so they would have to be so close to your machine, they might as well be in the house with you.