How to protect your computer from a virus

Give a refresher on how to protect computers from a virus. If your family shares a computer, what ground rules should you establish for everyone to keep your vulnerability to a minimum?

For businesses, what tools can they use on their network and computers to help them? What kind of Internet access policies should they put in place to limit exposure?

Talk about what do you do if you get a virus? How to you safeguard your data, family photos, recipes, craft patterns, work files so you can always retrieve them even if you have to wipe your computer clean?