You may not know it, but your computer is being targeted. This probably isn't personal — all computers are targets. There are people out there trying to bring down your computer or gain access to data on it, for personal gain or plain mischief. It's up to you to be aware of what the dangers are and how you can help protect your computer and be more secure.
Know your enemy: This lesson will introduce you to various ways your computer could be at risk and give you some advice on how to help avoid those risks.