SCI is one of how many categories of information requiring classified protection as outlined in Executive Order 13526?

The correct answer is eight because Executive Order 13526 establishes a framework for classifying national security information and differentiates between various categories that require protection. Within this directive, there are specific categories outlined for classified information, and one of those categories is Sensitive Compartmented Information (SCI).

SCI is a particular type of classified information that requires access to be limited to individuals with specific clearances as well as a demonstrated need to know. It is designed to protect certain sensitive intelligence sources and methods. The eight categories in question encompass multiple types of classified information, including Waypoint Security, and Special Access Programs, among others. Recognizing that there are eight categories helps in understanding the breadth of classified information and the significance of each type in maintaining national security.