Security refers to the measures and practices implemented to protect individuals, organizations, and systems from potential threats, risks, and unauthorized access. It encompasses various aspects such as physical security, cybersecurity, data protection, and privacy. Security measures can include the use of locks, surveillance systems, firewalls, encryption, authentication protocols, and security policies. The goal of security is to ensure the confidentiality, integrity, and availability of assets, information, and resources, thereby minimizing the potential for harm, loss, or disruption.