Caching is the process of temporarily storing copies of data, such as web pages or files, to improve access speed and reduce server load. When you visit a website, your browser or a server may keep a local copy of frequently accessed information. This allows future requests to be served faster, as the data doesn’t need to be retrieved from the original source each time. While caching enhances performance and efficiency, improper configuration can introduce security risks, making cached data a potential target for cyberattacks.