What is typically required to grant access to classified information?

To grant access to classified information, a security clearance is the primary requirement. A security clearance is a formal determination by a government agency that an individual is eligible for access to classified information based on their trustworthiness and reliability. This process typically involves thorough background checks, evaluations of the individual's personal and professional history, and assessments of any potential risks.

Having a security clearance indicates that the individual has undergone the necessary vetting process to determine their capability to handle sensitive information without posing a risk to national security. While government approval, military service, or citizenship may play roles in the broader context of accessing classified information, the fundamental requirement that directly allows access is the attainment of the appropriate security clearance.