Security Clearance Law and Legal Definition

Usually, one nation’s military possesses information and technology helpful to an enemy country. The unauthorized release of military information causes challenge to nation's national security. Unauthorized release can cause war and ineffective mission. Moreover, unauthorized release of military information can result in the death or injury of military and civilian personnel. Security clearance is an administrative determination by competent authority that from a security stand-point an individual is eligible for access to classified information.

A security clearance investigation is an inquiry into an individual’s loyalty, character, trustworthiness and reliability. Investigation is conducted to ensure that a person is eligible for access to national security information. The investigation focuses on an individual’s character and conduct. An inquiry emphasizes factors like honesty, trustworthiness, reliability, financial responsibility, criminal activity and emotional stability.