What are the different DoD security clearance levels?
Confidential: The lowest security clearance level. The unauthorized disclosure or loss of material at this level could reasonably be expected to cause damage to national security. Secret: The second level security clearance. The unauthorized disclosure or loss of material at this level could reasonably be expected to cause serious damage to national security. Top Secret: The highest level security clearance. The unauthorized disclosure or loss of material at this level could reasonably be expected to cause – exceptionally grave damage to national security.
