A file shredder is a software tool designed to permanently delete files from a computer. Unlike the standard delete function, which only removes files from view, a file shredder overwrites the data multiple times, making it nearly impossible to recover. This is particularly useful for sensitive information, such as personal documents or financial records. Using a file shredder helps protect privacy and security by ensuring that deleted files cannot be retrieved by unauthorized users. Many file shredders offer various shredding methods, allowing users to choose the level of security they need. Popular examples include Eraser and CCleaner.