A shredder is a machine designed to cut paper and other materials into small pieces, making it difficult to read or reconstruct the original documents. Shredders are commonly used in offices and homes to protect sensitive information, such as financial records and personal data. They come in various sizes and types, including strip-cut, cross-cut, and micro-cut, each offering different levels of security. In addition to paper, some shredders can handle credit cards, CDs, and other materials. Regular use of a shredder helps prevent identity theft and ensures that confidential information is disposed of safely. Many shredders also have features like automatic feed and jam-proof technology for added convenience.