Have you ever heard of a credit card? It's like a tiny, little card that allows you to buy things without having to use money that you have with you, but instead, you borrow the money from the bank that gave you the card.
Sometimes, bad people try to use fake or stolen credit cards, and that is called credit card fraud. This means they are trying to use someone else's money for themselves, without permission.
Now, imagine if you had candy and someone else came and took it without asking. That would make you very sad, wouldn't it? It's the same with credit card fraud. It makes the person who's card is being used sad and angry because they have to pay for something they didn't even buy.
That's why it's important to always keep your credit card safe, so no one can steal it. You should also check your credit card bills regularly to make sure that there aren't any charges you didn't make.
Remember, always be safe with your credit card so that you can enjoy buying things without worries!