Language-based security is a way to make sure the programs on your computer stay safe. It makes sure that only the right people can do the right things on the computer. It does this by using a special language to give instructions to the computer. The language has certain rules that are designed to keep it safe. For example, it only allows certain people to do certain tasks and it doesn't give people the ability to do anything that could potentially harm the computer. Language-based security helps to keep your computer and the programs on it safe.