The California Comprehensive Computer Data Access and Fraud Act is like a set of rules that people have to follow when they are using computers. It is a law that makes it illegal to access someone else's computer or computer system without permission. This is because it can be very harmful and dangerous to access someone else's private information. Think of it like a lock on your diary - only you have the key to unlock it and read your secrets.
The law also makes it illegal to use a computer to commit fraud or steal things. Fraud is when someone lies or tricks you in order to get something from you, like your money or your personal information. It is like if someone was pretending to be a friend of yours and asked for your allowance, but really they just wanted your money.
It is very important to follow this law because using computers improperly can cause a lot of harm. Just like it is important to follow the rules when playing a game or doing an activity. It keeps everyone safe and happy!