Data erasure is the process of permanently removing data from storage devices, ensuring that it cannot be recovered or accessed by anyone. This is important for protecting sensitive information, such as personal details or business secrets, especially when devices are sold or disposed of. Methods of data erasure include overwriting data with random patterns or using specialized software designed for secure deletion. Organizations often implement data erasure as part of their data security policies to comply with regulations and protect against data breaches. By effectively erasing data, companies can minimize risks associated with identity theft and maintain the privacy of their customers and employees.