Security

Security is like a big fence that is used to protect something from harm. It's like having a big wall around your house or your yard, so that bad people or animals can't get in and do something bad to it. Security also means keeping important information or passwords safe, so that nobody else can access it and use it to do bad things. For example, if you shop online, you want to make sure that when you type in your credit card information, it is sent to a secure website, so that nobody else can see it. That way, no one else can use it to buy things without your permission.