Border security is the protection and surveillance of a nation’s borders to prevent illegal activities such as unauthorized immigration, human trafficking, drug smuggling, and terrorism. It involves the use of advanced technology, physical barriers, and law enforcement agencies to monitor and regulate the movement of people and goods across borders. Effective border security ensures national safety, economic stability, and the enforcement of immigration laws. As global threats evolve, countries continuously enhance their border control strategies through intelligence sharing, biometrics, and international cooperation.