[Electron]

I attended the Information Assurance / Computer Network Defense course a couple years back. There is no better protection than a gap of air. If you are going to leave your machine on, unplug the LAN/Phone cord from your computer to avoid hackers using your computer as a zombie. A zombie is when someone takes control of your machine and uses it to hack someone else, thus placing the trace back to you...there are a lot of evil doers out there. If you're computer savvy, you can clean up your registry using a program called, "hijack this." Be careful with this program, if you don't know what you're doing, you could do irreversible damage to your computer.