What does ‘sensitive compartmented information’ (SCI) pertain to?

Sensitive Compartmented Information (SCI) refers specifically to information that requires a high level of control and protection, primarily because it is derived from intelligence sources. This type of information is often restricted to individuals who have been specially cleared to access it. The designation 'compartmented' indicates that this information is organized into compartments to limit exposure and access to those who truly need to know, thereby safeguarding national security and intelligence operations.

The nature of SCI necessitates stringent security measures to prevent unauthorized disclosure and to protect sources and methods that are critical to national defense. This compartmentalization helps manage sensitive information carefully, ensuring that only authorized personnel who are trained and vetted have access, which ultimately serves to protect the interests of national security.