Abstract: In a storage box for a disk, the lid and the base of the box are hinged along one side. A security bar holds the lid and base closed. The security bar has one surface with pairs of pins at intervals therealong. The lid and the base have respective pin receiving regions, such as openings, which receive the pins of each pair to hold the box closed. A latch on the security bar projects into an internal latching region in the box to prevent removal of the security bar. The latch is rotatable by an insertable key to a release condition to release the security bar for removal.