Cyber security refers to the practice of protecting computers, networks, and data from unauthorized access, attacks, or damage. It involves implementing various technologies, processes, and measures to safeguard sensitive information from cyber threats, such as malware, phishing, and hacking. Organizations and individuals use cyber security to ensure the confidentiality, integrity, and availability of their information. This field encompasses various areas, including network security, application security, and information security, all aimed at defending against potential cyber risks and ensuring safe online experiences.