Trustworthy computing is like playing with toys safely. When you have a new toy, you want to make sure it's safe to play with. Similarly, when you use a computer or other technology, you want to make sure it's safe to use.
Computers and other technology can have bad things called viruses and hackers that try to steal your information, change things on your computer, or even stop your computer from working altogether. That's why trustworthy computing means making sure your computer and the technology you use are as safe as possible from these bad things.
To be trustworthy, computers and technology need to have things like passwords and security software that help protect them. Just like toys with sharp edges need to be kept away from kids, websites with bad intentions need to be kept away from your computer.
By being careful and using trustworthy computing, you can play with your toys and use your computer safely and securely.