Encryption is a method of securing communication and data by converting it into a code that can only be read by individuals who have the key to decrypt it. It is commonly used to protect sensitive information such as financial transactions, personal data, and confidential communications. Encryption helps to ensure the privacy and security of information transferred over the internet, preventing unauthorized access or interception by cybercriminals. It plays a crucial role in cybersecurity and is a fundamental tool for protecting data in an increasingly digital world.