Sensitive Compartmented Information Facility (pronounced “skiff”), a U.S. Department of Defense term for a secure room. It can be a secure room or data center that guards against electronic surveillance and suppresses data leakage of sensitive security and military information. SCIFs are used to deny unau­tho­rized per­son­nel, such as for­eign intel­li­gence ser­vices or corporate spies, the oppor­tu­nity for unde­tected entry into facil­i­ties for the exploita­tion of sen­si­tive activ­i­ties.