The Central Industrial Security Force (CISF) is one of India’s premier Central Armed Police Forces under the Ministry of Home Affairs. It is responsible for providing security cover to critical infrastructure installations across the country, including airports, seaports, metro networks, government buildings, and industries in nuclear, space, steel, and mining sectors. The CISF recruitment exam is conducted by the Union Public Service Commission (UPSC) or Staff Selection Commission (SSC) for various posts like ASI (Assistant Sub-Inspector), SI (Sub-Inspector), and Constable.