Defensive computing

Defensive computing is like wearing a helmet while riding a bike to protect your head. It's a way to protect your computer and personal information from bad guys who want to do bad things.

When you use a computer, it's connected to the internet, which is like a big, open space with lots of people - just like a park. Some of those people may be nice and want to help you, but some might want to take your things or trick you into giving them your information.

To defend against these bad guys, you need to do things like make your passwords hard (just like a secret word only you know), and update your computer software regularly (like getting a booster shot to protect you from new germs). You can also use things like antivirus software (kind of like taking vitamins to help you stay healthy) and firewalls (like the walls around a castle to keep out invaders).

It's important to remember that even with all these defenses, sometimes bad things can still happen. Just like sometimes, even with your helmet on, you might still have a small accident while riding your bike. But by being smart, and using defensive computing, you can greatly reduce the chances of anything bad happening to your computer and your personal information.