ISO/IEC 27001 is like a special set of rules that helps people and companies keep their information safe. Just like how we have rules at school to keep us safe and healthy, businesses have rules too to keep their important stuff safe.
These rules tell us how to protect important things like passwords, documents, and emails from people who might want to take them without permission. They also tell us how to keep our computers and phones safe from viruses that can make them stop working or break into them.
To follow these rules, businesses have to do things like make sure their computers and phones have strong passwords, install special software to keep out viruses, and make sure no one can get into their important files without permission.
When a business follows all of these rules, they get a special certificate that shows they are doing a good job at keeping information safe. It's like getting a gold star at school for doing a really good job!
But just like how we have to keep following the rules at school to keep our gold star, businesses have to keep following the rules and keep their information safe to keep their certificate. That way, everyone's information is safe from bad guys who might want to take it without permission!