Secret Clearance

Secret is the middle level of security clearance granted by the U.S. government, between Confidential and Top Secret.

Quick Facts

Level Middle standard clearance
Damage if disclosed Serious damage to national security
Investigation Tier 3 (formerly NACLC)
Reinvestigation Every 10 years / Continuous Evaluation
Typical timeline 2-6 months

What It Means

A Secret clearance allows access to information that, if disclosed without authorization, could reasonably be expected to cause serious damage to national security[1]. This includes military plans, weapons systems details, and sensitive intelligence reports that don't rise to the Top Secret level.

Investigation Requirements

Secret clearances require a Tier 3 background investigation, which includes[2]:

Unlike Top Secret investigations, Tier 3 investigations typically do not include in-person interviews with references unless issues arise.

Processing Times

According to DCSA metrics, the average processing time for Secret clearances is significantly shorter than Top Secret[3]. However, individual timelines vary based on the complexity of your background.

Common Positions

Secret clearances are the most commonly held clearance level. They're required for:

Related

References

  1. ^ Executive Order 13526: Classified National Security Information. National Archives. Accessed 2026-01-08.
  2. ^ Security Clearance Process: Answers to Frequently Asked Questions. Congressional Research Service. Accessed 2026-01-10.
  3. ^ DCSA Personnel Vetting Processing Times. Defense Counterintelligence and Security Agency. Accessed 2026-01-08.

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