What type of information can merit "Sensitive Compartmented Information" (SCI) classification?

The classification of "Sensitive Compartmented Information" (SCI) specifically pertains to information that requires additional protection because disclosing it could result in significant harm to national security. The primary focus for SCI classification is on protecting sources and methods of intelligence operations; this means the information concerns the techniques and practices used by intelligence personnel to gather and analyze data.

In this context, classifying information as SCI helps ensure that sensitive details about how intelligence is acquired are safeguarded, thereby preventing adversaries from understanding or countering those methods. This level of classification is essential because it directly impacts the effectiveness and safety of intelligence activities.

Other types of information listed are not classified under SCI. General public interest information, internal office procedures, and unclassified data do not meet the criteria for the sensitivity that necessitates compartmentalization to protect national interests and intelligence methodologies.