Do you know what a superhero is? Just like how superheroes are always ready to save people from trouble, the United States Computer Emergency Readiness Team (US-CERT) is always ready to protect our computers and the Internet from bad guys who want to harm them.
You know how we have to follow rules to stay safe in our daily lives, like not talking to strangers or looking both ways before crossing the road? US-CERT does the same thing for computers and the Internet. They tell people what they need to do to keep their computers and the internet safe from bad guys.
US-CERT also keeps an eye on the Internet to see if there are any bad guys trying to do bad things to our computers. They work with other people, like the police and other countries, to catch the bad guys who are trying to harm computers and the internet.
So, just like how we have superheroes to protect us from danger, US-CERT is a superhero for computers and the internet.