Do you know how people use computers and phones to do things like play games and talk with friends? Well, sometimes bad guys try to use those things to do bad things like stealing information or breaking into important websites.
The European Union Agency for Network and Information Security (also called ENISA) is a group of people who work very hard to make sure that doesn't happen. They help countries in Europe work together to make sure everyone is safe and secure when using the internet and other computer things.
ENISA also helps people learn how to protect themselves online and come up with better ways to keep everything safe. Like a superhero for the internet, ENISA works hard to keep everyone safe from the bad guys.